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GENERAL CATALOG / HIGH flDELlTY PRODUCTS ELECTRONIC COMPONENTS Shure- the Standard of Quality.. ."In Eleclronics Since 1925"

Shure Brothers, Inc. is providing for today's critical requirements and will meet the exacting demands of the future. The world of electronics is at the threshold of a new era, and Shure planning envisions dramatic sew products and revolutionary applications which will meat the challenge and fulfill the promise of tomorrow. Since 1925 Shure Brothers, Tnc., has made numerous significant contributions to the development of orig- inal acoustical-electronic products. In the future, as in the past, you can look to Shure for continued leadership in : Fine Studio and Public Address Microphones Precision Magnetic Recording Heads Cartridges and Arms Original Equipment and Replacement Phonograph Cartridges "Industry-Standard'' Communications Microphones Handsets and Special-Purpose Microp hones CONTENTS

Shure Brothers, Inc., is able to give you quality products because we continually strive to raise already critical standards to precision levels previously considered unattainable. Page Some of the more important factors governing Shure Amateur Communication ...... 16 quality are: Carbon...... 19 "RESEARCH AND DEVELOPM ENT-A contin- Controllcd Magnetic. ... 13-14 uing research program is devoted to the objective of developing new products with performanoe and Crystal...... fl-12 design standards of a high order. General Purpose...... 6-10 *ENGIh'EERING FACILITIES-The most modern Language Laboratory...... l7 anechoic chambers and laboratory equipment, much Special Purpose ...... 15-18 of it unavailable commercially, have been designed Studio...... 4-5 and built by our own engineering laboratory staff. *ADVANCED METHODS AND STANDARDS- Special control techniques and devices enable us to improve the precision quality of customized assembly-line production. Stereo Broadmst Equalizer. .U *SCIENTIFIC PRODUCTION TECHNIQUES- Special production facilities guarantee desired delivery of mass-produced components for original equipment. Stertophonic & Monopiwnic *QUALITY CONTROL-The continuous use of Phono Catrtridgu.. ...24-26 daily quality control techniques for incoming mate- Stcrwphonic & Monophonic rials and for all phases of production results in Tone Arms. .27-Back Cover uniform, high quality products. Add up all of these factors and you have a time-proved REPLACEMENT formula for the quality performance and long-life opera- CARTRIDGES Page IS tion of Shure products. r

m~ljdETIL LRECORDING HEADS II<::!C 2: STUDIO MICROPHONES

m& 'muSTUDIO UNI-RON UNI-DIRECTIONAL RIBBON MICROPHONE *

This quality microphone is designed for discriminating users with the most exacting professional requirements. The rugged "333" is highly recommended for motion-picrure studios. TV studios, radio stations, professional recording, and all other uses where quality requirements are of the highest. The "333" is super-cardioid, uni-directional-reduces the pickup of random noise energy by 73%-prevents the pickup of moving props and scuming feet. The "333" Studio features the patented, world-famous Shure "Uniphase" acoustical network system-a field-proved standard of quality.

Jm&L1525'swmo sLE.DvNE OMNI-DIRECTIONAL DYNAMIC MICROPHONE*

The Studio "525" is an exceptionally fine, slender microphone of broadcast quality. It is custom-built to provide high fidelity reproduction of voice and music. The microphone has complete versatility and reliability for indoor and outdoor use and may be used: (1) an a conventional floor or desk stand, (2) in the hand, and (3) with the lavalier cord and belt clip assembly. The use of high efficiency magnetic materials and specially designed magnetic circuits has made it possible to develop this small microphone and still achieve maximum owrating effi- ciency. The microphone is ruggedly built to withstand hard usage and is unaffected by temperature and humidity variations.

V&.300 \.umo GRADIENT^ BI-DIRECTIONAL RIBBON MICROPHONE*

This professional quality multi-impedance microphone is widely used for tape recording, broadcast and highest quality Public Address use. The "300" has a specially designed anti-"PFF" filter screen-which eliminates pickup of distracting breath noises. It provides pickup at the front and rear of the microphone, but greatly reduces pickup at the sides. One of the outstanding features of the "300" is the fact that the microphone can be placed at a 73y0greater distance from the performer than is possible with omni-directional microphones. It is ideal for highest-quality reproduction, especially wherever multi-person pickup is desired, yet background noise must be reduced.

*Available in matched setsfor sicreo recording at no additional cost. (Matched to plus or minus I db in Ievcl and 1% db in respo~rse.) 1 "333" UNI- DIRECTIONAL RIBBON MICROPHONE LIST PRICE: $250.00 lifetime swivel. Permits tilting the head 45" forward TYPE: Ribbon and 70" backward, making it simple to aim the micro- :30 to 15,000 cps production phone at the source of sound. uniformity guaranteed to ptus or minus 21h db. SHOCK MOUNT : Special vibration-isotation unit of OUTPUT LEVEL: 50 impedance: -60 db live rubber construction. 150 ohm impedance: -59 db CABLE CONNECTOR: Cannon XL-3-11 250 ohm impedance: -59 db CABLE: 20 ft.. 2-conductor shielded broadcast type (0 db = 1 miliiwatt per 10 microbars) STAND THREAD: Standard %'-27 thread IMPEDANCE: E uipped with a multi-impedance switch, STAND COUPLERS:+Adapter for 1Epipe thread or rurnishing a %mce of 3 impedances-150 , w-24 thread ava~lableupon request at no extra M-150 ohms, H-250 ohms. charge. POLAR PATTERN: Super-Cardioid (Uni-directional) SWITCH: Voice-Music Switch to adjust frequency char- Response at rear down 12 to 20 db from front. acteristic for optimum performance. MAGNETIC CIRCUIT: Uses V DIMENSIONS: 79&* high; 176" wide; 1 deep CASE; Die cast zinc NET WEIGHT: {less cable): llh Ib.; packaged weight 4% FINISH: Combination non-reflecting "Bronze-Tone" 1bs. enamel case with beige aluminum grille. OPTIONAL ACCESSORIES: Model S33 Desk Stand, SWIVEL:New, improved, self-adjusting "positive action" Model A86A CabIe-Type .

1 "525" OMNI- DIRECTIONAL DYNAMIC MICROPHONE

LIST PRICE: 5200.00 It is a self-adjusting "positive action" lifetime swivel which errnits the microphone to be tilted 90" from TYPE: Dynamic verticayto horizontal, making it simple to am the rnl- FREQUENCY RESPONSE: 40 to 15,000 cps, produc- crophont at the source of sound. tion uniformity guaranteed to plus or minus 2% db. CABLE CONNECTOR: Cannon XL-3-11 IMPEDANCE:Equipped with a multi-impedance switch, CABLE: 20 ft., 2-conductor shielded broadcast type furnishing a choice of three impedances-L30-SO ohms, M-150 ohms, H-250 ohms. STAND THREAD: The Model A25 swivel adapter has a Y-27 thread LEVEL: At 50, 150,250 ohms: -61 db OUTPUT STAND COUPLERS: Adapter for I,$'' pipe thread or (0 = 1 10 db m~lliwattper microbars) w-24 thread are available upon request at no extra POLAR PATTERN: Omni-directional charge. MAGNETIC CIRCUIT: Uses Alnico V magnet DIMENSIONS:81%~'' high, 1" diameter NET WEIGHT: (less cable): l/z Ib.; packaged weight 3% CASE: Aluminum Ibs. FINISH : Non-reflecting "Bronze Tone" enamel with FURNISHED ACCESSORIES:A28L Lavalier Assembly, beige griIle. OPTIONAL ACCESSORIES: Model S33 Desk Stand, SWIVEL ADAPTER: Furnished with A25 swivel adapter. Model A86A Cable-Tyw Transformer.

LIST PRICE: $150.00 lifetime swivel permits tiking the head 45" forward TYPE: Ribbon and 90" backward so that the microphone can be FREQUENCY RESPONSE: 40 to 15,000cps production aimed at the source of sound. uniformity guaranteed to plus or minus 2% db. SHOCK MOUNT: Special vibration-isoiation unit of OUTPUT LEVEL: 30-50 ohms -59 db* live rubber wnstructlon. 1 5,@250 ohms -60 db* CABLE CONNECTOR :Equipped with Cannon XL-3-1I. Hlgh -57 db5* connector. * (0 db- 1 miHiwatt per 10 microbars) CABLE: 20 ft.. 2-conductor shielded broadcast type **(O db- I per microbar) STAND THREAD: W-27 thread IMPEDANCE:Equipped with a multi-impedance switch, STAND COUPLERS: Adapter for d/i" pipe thread or furnishing a cho~ce of three imptdmces-13050 w-24 thread available upon request at no extra ohms, M-150-250ohms, H-35,000ohms. charge. POLAR PATTERN: Bi-directional. Equaly sensitive SWITCH: Equipped with Voice-Music Switch to adjust at front and rear. Response at sides down 15 to 20 db frequency characteristic for optimum performance. from front and rear responses. MAGNETIC CIRCUIT: Uses Alnico V magnet DIMENSIONS: 6" high; I?f wide, 2!3'6" deep CASE: Die cast zinc NET WEIGHT: (less cable): 1 Ib.: packaged weight 4 Ibs. FINISH: Non-reflecting "Bronze-Tone" enamel OPTIONAL ACCESSORIES: Model S33 Desk Stand, SWIVEL: New improved self-adjusting "positive action" Model A86A Cable-Type Transformer. rn rn rn = GENERAL PURPOSE MICROPHONES 1

Recording and Public-Address Microphones I

SPECIFICATIONS FOR MODEL 330 LIST PRICE: $120.00 TYPE: Ribbon FREQUENCY RESPONSE: 30 to 15,000 cps. OUTPUT LEVEL-: 50 ohm irnpwhnce -59 db* 150 ohm impedance -57 db* 250 ohm impedance -58 db* *(O db - 1 miiliwatt per 10 microbars) IMPEDANCE: Equipped with a Multi-Impedance Switch, furnishing a cholce of 3 impedances-50 ohms, 150 ohms, 250 ohms POLAR PATTERN: Super Cardioid (Uni-directional). Re- sponse at rear down 15 db from front. MAGNETIC CIRCUIT: Ribbon Element-Alnico V magnet CASE: Die cmt zinc. The striking-looking new 330 "UNI-RON" Miqe FINISH: Satin chrome plate with natural anodized alumi- phone has been dwigncd to meet the exactin require- num grille mtsof profcuional tape -ding an8 bghst SWIVEL : Self-adjusting "positive action" lifetime swivel. quality, indoor pubIic-address systems, The Permits tilting the head 45" fornard and 70" backward, "UNI-RON" is basically a member of the Shurt making it simple to aim the microphone at the source Studio Microphone family, similar in appearance and of the sound. performance to the Model "333". The "UNI-RON SHOCK MOUNT:.SpeciaI vibration-isolation unit of live has a supcrtardioid pickup pat--durn the pick- by rubber construction. up of undwired random noise energy 73 0/,! CABLE CONNECTOR: Equipped with Cannon XL3-11 This rugged performer has been devtloped to achim Connector rating ptrformance-for those applica- CABLE: 2&ft., Zconductor shielded broadcast type ighest quality is essential, yet cost is an STAND THREAD: Standard %'-27 thread tor. DIMENSIONS: 31% high, 1W wide, 1%' deep NET WEIGHT: (less cable): 1% Ib.: packagd weight 3% Ibs. OPTIONAL ACCESSORIES: Model S33 Desk Stand, Model A86A Cable-Typt Transformer.

SPECIFICATIONS FOR MODEL 31 6 LIST PRICES: Model 315 $89.50, Model 315s (with switch) $91.50 TYPE: Ribbon FREQUENCY RESPONSE: 50 to 12,000 cps OUTPUT LEVEL: L -30-50 ohm impedance -59.5 db* M-150-250 ohm impedance -60 db* I W -High -57 db** * 0 db - I milliwatt per 10 microbars) Model 3158 shown) **lo db = I volt per microbar) IMPEDANCE : Equipped with a multi-impedance switch, furnishing a choice of 3 impedances: L-30-50 ohms, M-150-250 ohms, H-High. POLAR PATTERN : Bi-directional. 66% ?+uction of pick- up of undesired sound. Equally sensltlve at front and This rugged high fidelity multi-impedance mimuphone back. Response at sides down 15 to 20 db from front is recommended for fme quality, general-purpm urn.. and rear rwponscs. The 315 will, reproduct voice and music in a clear, MAGNETIC CIRCUIT: Uses Alniw V magnet natural-tone quality, which makes it ideal for urn in CASE: .Die cast zinc auditoriums, night clubs, schools and churches. It is FINISH: Satin chrome similar in features and design to the Studio Model 300. SWIVEL: New self-adjusting swivel permits tilting the head The 3 I5 is used for those numerous vublic-addm through 90" so that the microphone can be aimed at the applications where its streamlined desib and striking source of sound. CABLE CONNECTOR: Equivalent to the Amphenol beauty lend dignity and prestige to any setting in M used. MC3 plug which it is This gradient microphone is a favor- CABLE: 1%ft,, two conductor, shielded broadcast type ite of professio@ performers and educators because STAND THREAD: Standard %'-27 thread it provida unusual freedom of motion on the platform DIMENSIONS: 6' high, 1x6"wide, I?$" deep -makimg it possible for the user to stand at a 73y0 NET WEIGHT: (less cabIe): 1 Ib.; packagd weight 21/1 Ibs. greater distance from the microphone than is possibb OPTIONAL ACCESSORIES: Model S36A Desk Stand, Model with oomi-dirwtional rnicrophonw. A86A Cable-Type Transformer.

*Available in marched sets for stereo recording at no additional cost. (Matched to pias or tninrrs J db in bwl and 1% db in frequency response.) GENERAL PURPOSE MICROPHONES

I OMNI-DIRECTIONAL DYNAMIC MICROPHON~

SPEClFlCATIONS FOR MODEL 630 LIST PRICE: $110.00 TYPE: Dynamic FREQUEN- RESPONSE: 50 to 15,000 cps OUTPUT LEVEL: L-50-250 ohm impedance - 61 db (0 db = 1 milliwatt pet 10 microbars) H- -61 db (0 db- l volt per microbar) IMPEDANCE: Equipped with a dual-impedance switch, furnishing a choice of 2 impcdanoes-L-50-250, H-high. POLAR PAlTERN: Omni-directional MAGNETIC CIRCUIT: Uses Alnico V magnet CASE: Aluminum FINISH: Black and gold anodized SWIVEL ADAPTER: Furnished with A25 type swivel adapter. It is a self-adjusting "Positive Action" lifetime swivel which permits the microphone to bc tilted through 90" from vertical to horizontal, making it simple to aim the microphone at the source of sound. CABLE CONNECTOR: Cannon XL-3-11 CABLE: 20 ft. high quality, 2-conductor shielded broadcast WdBg '530' BROADCAST SLENDVNC* STAND THREAD : With swiveI adapter, standard w-27 head and may be mounted on any conventional desk, The Yendynes are the most versatile fine quality probe banquet or floor stand. microphones ever developed-actually five micro- SWITCH: On-Off(normally clod) phoptcs in one because of their practical design and DIMENSIONS: 71%" high, 1' diameter NET WEIGHT: useful accessories. They can be used for indoor or (less cable): $$ lb.; packaged weight 2% Ibs. outdoor FURNISHED ACCESSORIES: On-Off Switch, with Adapter applications in the following manner: (1) in Plate, A25B Swivel Adapter, and A28L Lavalier Assembly. the hand; (2) on a floor or desk stand; (3) hung OPTIONAL ACCESSORIES : Model S33B Desk Stand, Model around the neck on a lavalier cord and clip assembly ; A86A Cable-Type Transformer. (4) "'an-off*' switch adapter; (5) "high and low" dual- impedance switch. The Slendyna are ideal for high quality public address, theater-stage sound system and all recording applications where an omni-directional SPECIFICATIONS FOR MODEL 596 microphone is Mrable. These microphones are rug- gedly built to withstand hard usage, and are unaffected LIST PRICE: $72.50 by temperature and humidity variations. TYPE: ~~nan& FREOUENCY RESPONSE: 60 to 13.500 cns OUTGUT LEVEL:L-SQ250 ohms imbd& -61 db(0 db- 1 milliwatt per 10 microbars) H-High impedance -61 db (0 db= 1 volt per microbar) IMPEDANCE: Equipped with a dual-impedance switch, furnishing a choice of 2 impe.dance$-G50-250 ohm, H-high. POLAR PATTERN: Omni-Directional MAGNETIC CIRCUIT: Um Alnico V magnet CASE: Brass FINISH: Satin chrome SWIVEL ADAPTER: Furnished with Model A25 type Swivel Adapter. It is self-adjusting and permits the microphone to be tilted through 90" from vertical to horizontal, making it simpIe to aim the microphone at the source of sound. CABLE CONNECTOR: Equivalent to Amphenol MC3 M plug. CABLE: 18 ft. Zcanductor shielded broadcast type STAND THREAD: With swivel adapter, standard w-27 thread, and may be mounted on any conventional dwk, banquet or floor stand. SWITCH : On-Off (normally closed) DIMENSIONS : 7W bigh. I" diameter NET WEIGHT:(less cabIe): lb.; packaged weight 2% lbs. FURNISHED ACCESSORIES: On-Off SwiaAdapter plate, A25 type Swivel Adapter. OFTIONAL ACCESSORIES: Model S33 hkStand, Model A86A Cable-Type Transformer and A28L LavalierAssembly. %& '535' SLENDYNE *

*Available in matched sets fur S&WO recording at no additional cost. (Malched toplu8 or m'nwi I db in level and /I,$ db in frequency response.) GENERAL PURPOSE MICROPHONES I

')&me m -smallest unidirectional dynamic microphones. d Feature truly uniform cardioid pickup pattern.

Recommended for critical broadcast and theater-stage sound system operation, high quality public address and recording applications.

SPECIFICATIONS FOR MODEL 548 LIST PRICE: $135.00 microphone can be aimed at the source TYPE: Dynamic. of sound. FREQUENCY RESWNSE: 50-15,000 cps. SHOCK MOUNT: Spacial vibratio~isola- OUTPUT LEVEL:-55 db (0 db = 1 mil& tion unit of live rubber construction. watt per 10 mcrobars) CABLE CONNECTOR: Equipped with I Cannon XL-3-11connector. IMPEDANCE:Dual. Choice of 30-100 ohms or 100-250 ohms. CABLE: 20 ft., Zconductor shielded broad- POLAR PATTERN: Cardioid. (Uniform cast type. with frequency, symetrical about axis). STAND THREAD : 5,$"-27 thread. MAGNETIC CIRCUIT: uses Alnico DIM,ENSIONS(not including swivel) : 11%4" V magnet. diameter, 5 &" length CASE: Die cast zinc and "Armo-Dur". NET WEIGHT (less cable): 1 lb., packaged 11 FINISH: Satin chrome and black. weight 4 lbs. 1 SWIVEL : Newim roved self-adjustin4 "posi- OPTIONAL ACCESSORIES: Model S33B tlve action" hhme sw~velperrnlts tilt- Desk Stand. Model A86A Cable Type ing of the head through 180' so that the Transformer.

Rracomrnsnded for dependable use in applications where a quality microphone with on-off switch is required. I I SPECIFICATIONS FOR MODEL. 6438 LIST PRICE: $89.95 SWIVEL : New improved self-adjusting "pos- TYPE: Dynamic. itivc action" lifetime swivel permits tilting FREQUENCY RESPONSE: 50- 15,000 cp. ~i~"6,~~,"c~~$~i~~oa~~h~h~~$ OUTPUT LEVEL: L0w:-57 db (0 db=I of sound. milliwatt per 10 microbars). CABLE CONNECTOR : Equivalent to Am- High : -55 db (0 db=l volt MC4M plug. I per microbar). CABLE: I8 ft., 3conductor shielded. IMPEDANCE: Dual. Choiwof 50-250 ohms 1.:*I. STAND THREAD: +41~-27 thread. UA lll&llr DIMENSIONS (not including swivel): 1 POLAR PATTERN: Cardioid. (Uniform diameter, Srb" with syme~calabout axis)' NET WEIGHT (kss cable): 3/i lb., packaged MAGNETIC CIRCUIT: uses Alnico wight 2% lbs. "UNIDYNE 111"'- V magnet. OPTIONAL ACCESSORIES: Modd A86A CASE: Die cast zinc and "Armo-Dur". Cable Type Transformer. Model S36A I FINISH: Satin chrome and black. Desk Stand.

Recommended for public address, tape recording, fixed-station communications, and a variety 1 of 0th applications requiring compactness mupled with maximum operating efisiency. I SPECIFICATIONS FOR MODEL 545 I LIST PRICE: S85.00 CASE: Die cast zinc and "Armo-Dur" TYPE : Dynamic FINISH: Satin chrome and black FREQUENCY 5e15,mcbs' CABLE CONNECTOR: Equivalent to Am- OUTPUT LEVEL: LOW: -57 db. (0 db= phenol MC-M plug, 1 milliwatt per 10 microbarsl CABLE: 18 ft., 3 conductor shielded I HIGH : -55 db.@ db= Length 5#'; Diameter 11/4" DIMENSIONS: 1 volt per microbar) NET WEIGHT (less cable): 1h lb., packaged IMPEDANCE:Dual. ChoiceoC50-250 ohms weight 24$ 1bs. or high. POLAR PATTERN: Cardioid (Uniforp A25B with frequency, symmetrical about axis) adapter. I MAGNETIC CIRCUIT : uses Alnico OPTIONAL ACCESSORIES: A86A Cable V magne Typ Transformer, S33B desk stands

*Availdie in matched sets for stereo recording at no addifional cost. (Matched to plus or minus I db in level and 1% db in frequency response.) GENERAL PURPOSE MICROPHONES

SPECIFICATIONS FUR MODEL 658

LIST PRICE: Model SSS 383.00, Model SSSW (with switch) $85.00 TYPE: Dynamic FREQUENCY RESPONSE: 50 to 15,000 cps OUWUT LEVEL: L-35-50 ohms -54 db (0 db = 1 milliwatt per 10 microbars) M-15&250 obms -55 db (0 db = 1 milliwatt per 10 microbars) H-High -57 db (0 db= l volt pr microbar) IMPEDANCE: Bqu!pped with, a Multi-Xmdance switch, furnishing a cho~ce of 3 impedances-G35-50 ohms, M-150-250ohms, H-35,000ohms. POLAR PATTERN: Ultra-Cardioid (uni-directional) Rwponse at rear down IS db from front. MAGNETIC CIRCUIT: Uses Alnico V Magnet CASE: Die cast zinc FINISH: Satin &chrome SWIVEL: New improved self-adjusting sitive action" lifetime swivel psrmits tilting,of tho LEhrough 80' so that the mcrophone can be aimed at the source of sound. CABLE CONNECTOR: Equivalent to Amphenol MCJM CABLE: 18 ft., 2-conductor, shielded broadcast type STAND THREAD: Standard w-27 thread DIMENSIONS: 7%" high, 2w wide, 3w deep NET WEIGHT: (less cable) : I % lb; packaged welght 3 4$ lbs. UNI-DIRECT IONAL OPTIONAL ACCESSORIES: Model S36A Desk Stand. DYNAMIC MICROPHONES * Model A86A Cable Type Transformer, For many years the Unidynes have ken the rnost wideIy used microphones throughout the world. They are specified by leading sound engineers and requested SPEClFlCATlONS FOR MODEL 666s by famed celebrities-for those important events where the faithfulness of sound reproduction is rnost Even LIST PRICE: $135.00 critical. And , "The Best is Betterv'-for the TYPE: Dynamic famed Unidyncs are now 41% higher in output level! FREOUENCY RESPONSE: 40 to 15.000 CDS. This means that the Unidynes are ideal for use with OUTPUT LEVEL: L-30-50 ohm impedance '-54 db low-gain tape recorders and low-gain P. A. systems- (0 db = 1 milliwatt per 10 microbarn) in addition to their famed use with highest quality M-15d250 ohm rmptdanat -55 db sound systems. (0 db= 1 milliwatt per 10 microbars) H-High -57 db (0 db= 1 volt per microbar) Models 55s and SSSW are highly xecommendd for IMPEDANCE: Equipped with a Multi-Impedance switch, fine quality public address, theater-stage sound systems, furnishing a choice of 3 impedanow-l-30-50 ohms, M-150-250ohms, W-High. rearding and remote . They are also the POLAR PATTERN: Ultra-Cardioid (Uni-directional) fidd-prwed standards for fixed-station use in the , Response at rear down 15 db from front. fire, transportation, forestry and commercial services. MAGNETIC CIRCUIT: Uses Alnico V Magnet CASE : Die cast zinc Model 556s is specially designed to meet the high FINISH: Satin chrome technical requirements of broadcast and SWIVEL: New improvd self-adjusting "positive action" studios. It will endure the heavy punishment of daily lifetime swivel germits tilting of the head through 45' use ad abuse-will operate at optimum efficiency forward and 90 backward so that the microphone can while wnventional microphones are "out of service." be aimed at the source of sound. SHOCK MOUNT: Special vibration-isolation unit of live due to their frequent need for maintenance and repair. rubk construction. It is held within close toleram in frequency response CABLE CONNEmOR: Equipped with Cannon XL-3-11 and directivity. The Broadcast Unidync is ideal for connector. high quality station and remote broadcasting, public- CABLE: 20 ft.. 2-conductor shielded broadcast type. address, theater-stage sound systems and recording STAND THREAD: Standard %"-27 thread DIMENSIONS: 7%" high, 23ia" wide, 3w tkp applications. The 5565 is provided with a vibration- NET WEIGHT: (less cable): 2 lbs., packaged weight 3lhlbs. isolation unit of .live rubber construction. This spe- OPTIONAL ACCESSORIES : Model S33B Desk Stand, Model cially designed shock-mount completely eliminates A86A Cable-TypeTransformer. metal-to-mtal contact betwen microphone and stand.

*Available in mtched sets for stereo recording at tm additional cost. (Marched to plus or minus I tfb in level and $b in frequency response.) GENERAL PURPOSE MICROPHONES

SPECIFICATIONS FOR MODEL 540s LIST PRICE: $49.95 TYPE: Dynamic FREQUENCY RESPONSE: 60 to 10,000 cps (Provisions for alternate response for voice intelligibility in paging and communications systems). OUTPUT LEVEL: 50-250 ohm impedance: -57 db (0 db= 1 milliwatt per 10 microbars) High impedance: -52.5 db (0 db=l volt per microbar) IMPEDANCE: Dual. Choice of 50-250 ohms or high. POLAR PATTERN: Omni-directional. CASE: Die cast zinc and "Armo-Dur." FINISH: Satin chrome and black. SWIVEL: New improved self-adjusting "positive action" lifetime "SONODYNE II" swivel permits tilting of the head through 150" so that the microphone can be aimed at the source of sound. A compact, modernistic microphone with high CABLE CONNECTOR: Equivalent to Amphenol MC3M. output dynamic element at moderate cost. The CABLE: 15 ft., 2-conductor shielded. "Sonodyne 11" features variable frequency response which allows the user to tailor the microphone to STAND THREAD : 5/8"-27 thread. the application-One of the most versatile micro- DIMENSIONS (not including swivel): 121/32"diameter phones on the market! 3 5/8" length. NET WEIGHT (less cable): 1% lbs., packaged weight 3% lbs. FURNISHED ACCESSORIES : Resonator plate and set-screw for changing response. OPTIONAL ACCESSORIES: Model S36A Desk Stand, Model A86A Cable Type Transformer.

SPECIFICATIONS FOR MODEL 51 AND 51s LIST PRICE: Mode1 51-$49.50 Model 51s (with switch)-$51.50 TYPE : Dynamic FREQUENCY RESPONSE: 60 to 10,000 cps OUTPUT LEVEL: L -35-50 ohm impedance -53 db* M-150-250 ohm impedance-52.5 db* H -High -52 db** *O db=l milliwatt per 10 microbars **0 db=l volt per microbar IMPEDANCE: Equipped with a multi-impedance switch, furnish- ing a choice of 3 impedances-L-35-50 ohms, M-150-250 ohms, H-High POLAR PATTERN: Omni-directional MAGNETIC CIRCUIT: Uses Alnico V magnet CASE: Die cast zinc FINISH : Satin chrome The "Sonodyne" is recommended for all general pur- SWIVEL: Lifetime swivel permits tilting the head 90" backward poses, including public address, wire and tape record- to horizontal position for omni-directional pickup. ing, and similar applications. It is used by bands, CABLE CONNECTOR: Equivalent to Amphenol MC3M. instrumentalists and recording artists because of its CABLE: 15 ft., 2-conductor shielded excellent reproduction of both voice and music. Because of its high output and multi-impedance fea- STAND THREAD: Standard %It--27 thread tures, tape recording enthusiasts have used the Sono- DIMENSIONS: 53/16" high 31/s1' wide 21/8" deep dyne as an ideal good-quality, moderately-priced NET WEIGHT (less cable): 1% Ibs., packaged weight 3% lbs. replacement for the conventional microphone sup- OPTIONAL EQUIPMENT: Model S36A Desk Stand, Model plied with tape recorders. A86A Cable Type Transformer. VERSATILE CRYSTAL M1CROPHONES I

audiencc participation shows; carnivals; panel and quiz shows; and use with home-recordem. When mounted on either cradle The "Monoplex" is the only Super-Cardioid Crystal Micro- or swivel, the "777" can be removed in a flash (no tools neces- phone made-far superior to any other crystal microphone. It sary)-simply by lifting it out of the holder. This makes 'it an is excellent for highquality public address, communications. ideal "walk-around" hand-held microphone. All models are recording, and similar applications. The 737A operates under furnished with a lavalier cord, for suspension of microphone adverse condiuons of background noise and reverberation- around the neck. where a conmtional microphone would be inadequate. Elim- inates feedback problems and reduces pickup of random sound by 73%! Has moisture-proof "Metal Seal" crystal for long oper- SPECIFICATIONS FOR MODEL 777 ating life. LIST PRICE: Model 777-$25.00 Includes A37L lavdier Cora and moIded stand adapter. SPECIF[CATIONS FOR MODEL 737A Model 777S-$27.00 Includes A37L lavalier cord, LIST PRICE: $46.00 "On-Off" switch and molded stand adapter. TYPE: Crystal- Moisture-proof "Metal Seal" crystal for long Model 777A-$33.00 Includes A37L lavalier cord, A25 Swivel operating life. stand adapter, S38 Desk Stand. FREQUENCY RESPONSE: 60 to 10,000 cps Model 777SA-$35.00 Includes A37L lavalier cord, A25 Swivel Stand OUTPUT LEVEL:-53 db* (0 db=l volt per microbar) stand adapter, S38 Desk and "On-Off"switch. IMPEDANCE: High. Recommended load: 1 to 5 meg, ohms TYPE: Crystal-moisture-proof "Metal Seal" for long oper- POLAR PATTERN: Super Cardioid, for 73% reduction of ating life. pickup of random nokeenergy. FREQUENCY RESPONSE: Smooth, peak free from 60 to 10,000 cps. CASE : Die cast zinc OUTPUT FINISH: Satin clirome LEVEL:-62 db (0 db=l volt per microbar) POLAR PATTERN : SWIVEL: Lifetime swivel permits tilting the head 90" back- Omni-directional CASE: Die cast zinc ward to horizontal position for omnidirectional pickup. FINISH CABLE CONNECTOR: Equivalent to Amphenol MC3M : Satin chrome SWIVEL: and 777SA CABLE: 15 ft, single conductor, shielded Models 777A are equipped with Model A25 STAND THREAD: Standard %"-27 thread swivel stand adapter. It has a self-adjusting "positive action" lifetime swivel which permits the microphone to be DIMENSIONS: 4" high, 6%" high with connector, 3%" tilted 90" from vertical to horizontal. wide, 1 %" deep. CABLE CONNECTOR:Equipped with Amphenol MClF plug NET WEIGHT:(less cable): 1% lb,; packaged weight 2% lbs. for attaching cable to microphone. OPTIONAL ACCESSORIES : Model S36A Desk Stands, CABLE: Detachable 7 ft., rubber-covered, single conductor Models AS3B, AS4B, A85C, A88A On-Off Switches shielded. STAND THREAD: Standard %'I-27 thread SWITCHES: Models 7775 and 777SA have a built-in switch to control the microphone circuit. The switch is of the The "777" Slim-X Microphones are rugged little microphones press-to-talk locking or non-locking type. weighing only 6 oum. They use a "Metal Seal" crystal for DIMENSIONS: (Microphone only) 4%'' high, 1" diameter. long opting life under adverse conditions of hat and hurnid- NET WEIGHT: (Microphone only) % Ib,; packaged weight ity. They are designed for goodquality voice and music repro- % Ib. duction. Their versatility and "hand-ability" make them ideal OPTIONAL ACCESSORIES: Model S38 mkStand, A25 for use by lecturers, announcers, instructon, and Hams; for type swivel Adapter. LOW COST ALL PURPOSE CERAMIC & CRYSTAL MICROPHONES r

Thcse beautifully designed microphone8 are exceltent for voice and music reprodue tion. Their extremely low price and good quality make them a "natural" for home recording, systems and inexpensive public address systems. The "StarIite" microphones can bt held in the hand, or used on a d& by simply releasing a "built- in", retractable stand which is an integral part of the back of the microphone case. LIST PRICE: $8.00 TYPE: Model 215-Ceramic, Model 715-Crystal FREQUENCY RESPONSE: Model 21 5-50-8,000 cp, Model 7 15-50-10,000 cp OUTPUT LEVEL: Model 215-56.5 db (0 db=1 volt per microbar), Model 715- 50 db (0 db = 1 volt per microbar) IMPEDANCE : High-Recommended load impedance: 1 to 5 megohms POLAR PATTERN : Stmi-Directional CASE: Impact Resistant Polystyrene FMISH: Model 215-Black Front, gray back with light gray grille, Model 715- Gray front, black back with black grilb CABLE: Equipped with 5 ft., fabriccowred, single conductor shielded cable STAND : Permanently connected retractable stand DIMENSIONS: 3%" high, 2%' wide, I?# dep NET WEIGHT: 31,5 02.; packaged weight l/z 16.

Low price, rugged hand-held microphone, designed for high speech intelligibility. A natural for radio amateur rigs adlow-cost public ad- systems. Has a broad base, complete with stand adapter for mounting on floor stand. LIST PRICE: Mode1 710A $12.00, Model 7106 (with switch) $14.00 TYPE: Crystal FREQUENCY RESPONSE: 60 to 9,000 cp OUTPUT LEVEL:-50 db (0 db= 1 volt per microbar) IMPEDANCE:High-Recommended load impedance: 1 to 5 megohms POLAR PATTERN: Semidirectional CASE: Die cast zinc FINISH : Metallic burgundy red CABLE: 7 ft. fabric covered, single-conductor shielded STAND THREAD: Microphones are provided with a stand adapter having the Standard w--27 thread which 6ts the conventional floor stand SWITCH: Model 710s has a built-in, press-to-talk switch DIMENSIONS: 3wa" high, 21!4 wide, I deep OPTIONAL ACCESSORIES: Models S34B or S36A Desk Stands NET WEIGHT: % lb.; packagd weight 1% Ibs.

Ideal for low-cost public address systems, call systems, amateur phons and general purpose use. Features good-quality reproduction at low cost. Usts moisture-proofed Bimorph Rochelle Salt crystal, for long-life operation. LIST PRICE: $19.50 TYPE: Crystal FREQUENCY RESPONSE: 30 to 7,000 cps OUTPUT LEVEL:-50 db (0 db=l volt per microbar) IMPEDANCE:High-Recommended load irnpedanw: 1, to 5 megohms POLAR PAITERN: Semi-directional CASE: Die cast zinc FINISH: Iridescent gray case, satin chrome grille MODEL 707A CABLE: 7 ft., single-conductor shielded MICROPHONE STAND THREAD: Standard w-27 thread DIMENSIONS: 3%' high, 2lw diameter OPTIONAL ACCESSORIES: Models S34B or S36A Desk Stands. NET WEIGHT: lb.; packad weight 1% Ibs. 1 CONTROLLED MAGNETIC MICROPHONES

POLAR PATTERN: Semi-directional SWITCH: Equipped with grip-to-talk CASE: Die cast zinc switch. similar to Shure A88A. The 510 is ideal for general purpose use FINISH : Metallic green Model 520SL: DPST- normally in areas where htat and humidity are CABLE: 7 ft., Zconductor, shielded closed-normaHy open a problem. Provides ruggedness, clear SWITCH : Built in, normally open, Model 520SLB: DPST- nor- reproduction and high output. Recom- switch to control the microphone mall y open-normally open mended for Announcing; Mobile Public circuit. The switch is of the press-to- DIMENSIONS: With stand 9%" high, Address Systems; Communications; taIk locking or non-locking type 5" wide., 7" deep Home Recording; and Intercom Sys- DIMENSIONS: With stand 8%" high, NET WEIGHT: kss cable): 2% Ibs.; tems. Fits snugly in the hand, or sits 5" wide, 7" deep. packaged weight 3319 Ibs. firmly on a desk. NET WEIGHT: 2 lbs.; packaged OPTIONAL ACCESSORIES : Model SPECIFICATIONS : Mode1 510 weight 2% lbs. A86A cable type transformer (for LIST PRICE: Model 510C $17.00, OPTIONAL ACCESSORIES : Model use only with Model 520SLB) Model 5106 (with switch) S19.00 A86A cabIe type transformer TYPE: Controlled Magnetic FREQUENCY RESPONSE: 100 to and 5208 "GREEN BULLET" 7,000 cps and SBOSLB "DISPATCHER" The "Green Bullet" is designed to OUTPUT LEVEL: -52.5 db (0 db= 1 The Model 5206L is epecially recom- re volt per microbar) provide quality music and speech mended for mobile and fixed station production at moderate cost. It is prac- IMPEDANCE: High. Recommended use, and is also very suitable for public tically immune to the tffects of high load 100,000 ohms or more address, recording, call systems, radio ternpwaturc and humidity. The "Green POLAR PATTERN: Semi-directional and amateur use, and similar Bullet" is highly recommended for those CASE: Die cast zinc applications, The Model 520SLB is es- public address systems where low cost FINISH: Metallic green pecially recommended for those appli- is a must, good reproduction is essential CABLE: 7 ft, single conductor, cations where low impedance micro- and ruggedness is a nectssity. phones are to be used in parallel, shielded SPECIFICATIONS: STAND THREAD: Microphone pro- baland-line operation and where long cable lengths are required. or under con- LIST PRICE: Mode1 520 $22.50 vided with a stand adapter having a Model 520B $22.50 %"-27 thread which fits the con- ditions of severe hum disturbances. ventional Boor stand SPECIFICATIONS: TYPE: Controlled Magnetic SWITCH: Model 510s has a built-in LIST PRICE: Model SMSL : $45.00 FREQUENCY RESPONSE: 100 to switch fo contr01 the microphone Model 520SLB: $49.25 9,m CPS circuit. The switch is of the press-to- TYPE : Controlled Magnetic OUTPUT LEVEL: Modd 520: -52.5 talk locking or non-locking type FREQUENCY RESPONSE: 100 to db (0 db=l voIt per microbar) Model 520B: db (0 db= 1 rnilli- DIMENSIONS:37%" high, 2+8" wide, 9,000 cps -51.0 I Pg" deep OUTPUT LEVEL: watt with 10 microbars) NET WEIGHT: 7/$ 16.; packaged Model 520SL: -52.5 db (0 db= 1 IMPEDANCE: Model 520-High. weight 1% lbs. volt per microbar) Recommended load 100,000 ohms OPTIONAL ACCESSORIES: MOM 520SLB: -51.0 db (0 db= or more. ModeIs S20B S34B or S36A Desk Stand 1 milliwatt with 10 microbars) Model : 15&250 ohms IMPEDANCE: POLAR PATTERN: Semi-directional Model 520SL: High. Recommended CASE: Die cast zinc load 100,000 ohms or more FINISH: Metallic green with satin Model 510 SLB is a coniplete assembly 5206LB: ohms of a low impedance, Controlled Magnetic Model 150-250 chrome grille Microphone with swirch and a desk POLAR PATTERN : Semi-directional CABLE: Model 520-7 ft., single con- stand.-1t is designed for mobile and CASE: Die cast zinc ductor shielded fixed-station use in all types- of com- FINISH: Metallic green with satin Model 520B-7 ft., 2 conductor munications, paging, and dispatching chrome handle and grille shielded systems. CABLE CONNECTOR: STAND THREAD:Standard %$"-27 thread SPECIFICATIONS : Mode1 5 1OSLB Model 52OSL: Equivalent to Amphenol MC3M ptug DIMENSIONS: Diameter 2'sAnv, over- LIST PRICE: $29.75 Model 520SLB: Equivalent to all length 3%" TYPE: Controlled Magnetic Amphcnol MC4M plug NET WEIGHT: 1 1b.packaged weight; FREQUENCY RESPONSE: 100 to CABLE : 1 % lbs. 7,000 cgs Model 520SL: 7 ft, high-quality 2 OPTIONAL ACCESSORIES : Models OUTPUT LEVEL: -51 db (0 db=l conductor shielded S34B or S36A Desk Stands, Model milliwatt with 10 microbars) Model 520SLB: 7 ft. high-quality 4 A86A cable type transformer (for IMPEDANCE: 150-250 ohms conductor (2 conductors shielded) use only with Model 520B) - THE ''W" SERIES

"CONTROLLED MAGNETIC" OENIRAL PURPOSE MICROPHONES

The Cornmatdo series represents a significant achievement in usage, the Commandos provide excellent voice and music repro- providing quality performance at nominal cost. These dramatic duction, making them ideal for general-purpose applications looking, rugged microphones can be used indoors or outdoors. where both voice and music reproduction arc of critical impor- Models 415 and 430 provide practical versatility of operation. tance. Commandos can be used for tape recording in the home; They can be held in the hand, set on a floor stand or on a desk theater-restaurantpublic address systems; lecturing; paging and stand-can be inserted or withdrawn frornthestand in a second, dispatching systems; interview- type shows; outdoor public without the use of any tools! Coupled with this versatility of address systems for carnivals, picnics and special events.

SPECIFICATIONS FOR *'COMMANDO" MODELS 415, 420 AND 430

415 rn 430 1iH Price: $27.50 t30.00 S38.50 TYP: CONTROLLED MAGNETIC Frworry Rmppm: 60 to 10,OW c.p.5. Equipped with rmdily chaneeable pin jacks (no,solderlng re uired) furnishing a choice of Inpdana: High two tmpedances: H -- Hlph and L -150 to 250 High -52 db (0 db 1 volt per microbar) Outgut hd: = Low -52 db (0 db = 1 mltliwatl per 10 rnicrobars) Polar Paltm: OMNI-DIRECTIONAL

Cam: Impact-resistant polystyrene ImpaEt --resistant polystyrene and die cast zinc. Impact-rcsishnt polystyrene. and dle cast zinc. nnlrh: Non-reflecting gray and satin throrne. Non-reflecting gray Non-reflecting gray and satin chrome.

Em: non-dwhable sindsconductor shielded 2V non-detachable, 2 conddor, shlsldsd 7' *connector forshielded attaching toAmphenol m~crophone. MC2M Swlkh: None None Press-to-talk switch-normally closed Length 6*" Dim8n1bns: Diameter of head 1%" kn;',":,"~%&d IW Diameter of handle #' ~~$~~/~~,,Diameter 01 handle H*' Net Weithi: H Ib. Y Ib. % Ib. (less cable) Packaged WdgM: 1% Ibs. +ilb. 2% I b. Switch locking plate for keeping switch in Model A250 Self-ad ustlng Swlvel Adapter "on" position, Model A25B Sdl+adiustin~ w!th standard -25 stand thread perrnlb Lavaiier Cord and clip assembly. Readily Swivel Adaptsr wit? standard %"-27 $!and Furnisbd Ammias: m~cmphonetobet1ltedthrough9Parcfrorn detachable lor use of microphone as a thread permlts rn~cropboneto be trlted vertical to horizontal, making It slmple to hand-held type. through 90° arc tram verllcal to harrzontul, aim the microphone at the source of sound. making it simple to aim the microphone at the source of sound.

OpUO1SOMI AgWJdW: ModelA34L 3388 Lavaller or S33B Assembly Desk Stand Model A86A Cable Type Transformer M$$$~~$$~~~I~~~~,"~fsD:~[and A34L Lavaller Assembly. I SPECIAL PURPOSE MICROPHONES

The "Ten-Fourv' features the hig h-impact "Armo-Dur" corrosion-proof case.

CONTROLLED MAGNETIC "TEN-FOUR" SERIES The Shure Controlled Magnetic "Ten-Four" is recommended for those applications where a rugged hand-held microphone is needed. It is ideal for outdoor public address (sports arenas, athletic fields, carnivals, etc.) and for mobile communicatiom. The "Ten-Four" is dtsigned for high speech intelligibility. Easy to use, fits snugly in the pdm of the hand.

A~ENTION"n~~s~-You'll find the "TEN-FOUR to be a choice microphone for all your mobile communkations applications.

SPECIFICATIONS -. . M4B 458 45KB 404C 4115C 405K Lirt Prk $33.00 $32.00 $37.50 $33.00 532.00 $37.50 tvnc CONTROLLED MAGNETIC I FWUMW RWIMIII 1 200 to 8,000 cps I OuCl .-40db (0 db=1 mllllwatt -40.5 db (0 db=l volt k%l per 10 microbars) per microbar) lmrdare 150 to 250 ohms Hlgh Recommended load 100,000 ohms or more. Pplar PaHwn OMNI-DIRLCTIOHAL 1 Cass 1 High impact grai "Armo-Dur" 1 5s ft. I 5 ft. 5H ft. 5'h ft. 5 it. I Extended 1 Extended Extended I I EiEiked 1 nlfl Copper Coppnr Tinsel Copper Copper Tinsel 4 Conductor 4 Conductor 3 Conductor 3 Conductor 3 Conductor 3 Conductar (2 cond. shleldad) (2 cand, shielded) (1 cond. shieldnd) (1 cond. shlslded) (1 cond. shielded) :1 cond. shielded) D~wiptron Coiled Cord Stra~ghtCord Colled Cord Coiled Cord Straight Cord Coiled Cord (Amphenol MC4M plug (Anphenol MC4M plug attached) attached] 1 Wullch MiEimlt I Normally closed* I Normally closed I Normally open [ Normally closed* I Normally closed 1 Normally open I I ~elaf~lrcul I Normally open I Normally open I Normally open Normally open I Normally open ) Normally open I -. . Leaf-type switches to control the mic. circuit ard to control an nxternal relay or switching clrcuit Dlmendms 311Ad' high, 2%" wlde, ld#d' deep Nd Wekhl % ib. I PsElrapld Weight I K lb. I I Furnishad Aeeewprinl I Mounting bracknt for permanent placement wlth the associatsd equlpmsnt t Opiiml Rer8mles Model A86A cable type transformer I *PROVISIONS FOR SIMPLE CHANGE TO NORMALLY OPEN.

"TE N-FOU R" SPECIFICATIONS Model R5T is a conversion kit contain- The perfect improvement-replacement FOR MODEL 405T ing a controlled magnetic cartridge and for carbon microphones now used in mo- LIST PRICE:$48.50 . It is designed to con- bile communications equipment. An out- TYPE: Controlled Magnetic (with vert carbon microphones into improved TRANSISTOR AMPLIFIER) controlled magnetic transistorized micro- standing feature incorporated in this unit FREQUENCY RESPONSE: 200 to phones. Conversion takes only a matter is a TRANSISTOR AMPLIFIER, housed 4m cps. of minutes-and all that is necessary is within the case. It is powered by the OUTPUT LEVEL:-1 db loaded with a screwdriver, a long-nose plier and a current available from the carbon micro- 500 ohms (0 db=l milliwatt per 100 soldering iron. phone circuit. Does not require batteries microbars) POLAR PATTERN: Semi-Directional SPECIFICATIONS or extra power-supplies. Provides re- CASE: High-impact gray "Armo-Dur" FOR MODEL R5T markable speech clarity and is free from CABLE: 5 ft, extended, 4-conductor LIST PRICE: $25.00 the aging common to carbon microphones stranded coiled cord, Mode1 C15C. TYPE: Controlled magnetic with tran- used under conditions of vibration. Re- SWITCH: Equipped with heavy-duty, sistor amplifier commended for mobile communications push-to-talk switch. Controls external FREQUENCY RESPONSE: 200 to where carbon microphones have been Elay' 4,000 cps bus, DIMENSIONS: 3#" high, 2%" wide, OUTPUT LEVEL:-1 db loaded with in use: police, trucking, taxicab, deep. 500 ohms (0 db=l m~lhwattper 100 etC., where high speech intelligibility and NET WEIGHT: % Ib,, pacwed weiht microbars) long operating life are essential. % lb. POLAR PATTERN: Omni-directional SPECIAL PURPOSE MlCROPHONES I

Ffiq AMATEUR RADIO COMMUNICATION L . . .

The response characteristic of these microphones has been tailored to meet the demands of radio communications. These microphones are ideally suited for single- sideband broadcast. The rising response characteristic with sharp cutoff below 300 and above 3000 cps. eliminates the need for audio filters. These units utilize a rugged, time-proven, controlled magnetic element, with high output equalling that of a crystal unit. The 440 and 440SL are ideal for use with all types of amateur transmitters.

SPEClFICATlONS: MODEL 440 AND MODEL 440SL MI'CROPHONES

LIST PRICE: 440-$25.0044lSL%47.50 TYPE : Controlled Magnetic. FREQUENCY RESPONSE: 300 to 3000 cps. OUTPUT LEVEL: -52.5 db (0 db=l volt per microbar) IMPEDANCE: High. Recommended Load 100,OM) ohms or more. POLAR PATTERN : Omni-directional . CASE: Die-cast zinc.. FINISH: matinChrome. 440SL-Satin Chrome with gray base. CABLE CONNECTOR: 440SLEquivalent to Amphenol MC3M plug. CABLE: 440-7 ft., single conductor shielded. 440SL-7 ft., high quality 2-conductor shielded. SWITCH: 440SL-Equipped with grip-to-talk switch, similar to Shure A88A. STAND THREAD: 44.0-standard %"-27 thread. DIMENSIONS: 440-21sha" diameter, 3:h" overall length. 440569%" high, 5" wrde. 7" deep (with stand). - NET WEIGHT: 440-1 Ib., Packaged weight 1% Ibs. 440SL-2% lbs., Packaged weight 3% Ibs. OPTIONAL ACCESSORIES: 440-Models $343 or S36A Desk Stands. 440SL-AS7K Modification Kit*

*A87K

SPECIAL NOTE: MOPlFICATlON KIT For a mobrle cornmunicatlons microphone for use with embodying many of the outstanding fea- SHURE MODEL 440SL MICROPHONE tures listed above, refer to the "Ten-Four", The Sure the mlcrophonc to obtain Model 404C microphone on page 35. A87K Kit will modlfy 44051 optimum flcxlblllty bwtwe*n mithmr VOX or push-to-talk operatim. LIST PRICE: $3.25 SPECIAL PURPOSE MICROPHONES

. . . FOR LANGUAcE LABORCT3R"=S

ma$e 544 ll",,Dv,E Ill1*MI,,,,,,,, Ideal for high cuality voicc and rnu~icreproduction in circumstances where a uni-directiunul microphone with a flexible arm can best be utilized. Recommended lor use as a masier microphone fur language laboratory applications. Electrical specifications For the 544 are identical to those for the 545 "Unidyne lii" microphone. LIST PRICE: Model 544-980.00 Model 544-G6--$83.00. lncludcs 6" flcxi ble gooseneck and mounting flange. "UNIDYNE 'ill,' 5& Model 544-G 1 2-583.75. Includes 12" Rexiblz gooscncck and mounting flangc. Modcl 544-G18-585.00. Includes 18" flexible gooseneck and mounting Range. CABLE: 7 ft., 3 conductor, non-detachable, shielded. NET WEIGHT (Mic, and cable): 5/8 lb. packaged weight 2% Ibs. FURNiSHED ACCESSORIES: Gooseneck adrpter. OPTIONAL ACCESSORIES: A86A cable type transfurrner, S33B desk stand, A25B swivel adaptcr.

1 I l-425 "COMMANDO" MltROPtIONE Designed for faithful voice and music reproduction. ldcal For recording on tapc, wire or disc, fixcd or mobile public address systems, language labora- tory systems, intercommunications systems, amateur co~nrnunicationsand s~milaruses wherc a flcxible arm is required. The 425 is rugged, and recom- mended for i~scwhere high qual~tyis desired at low cost. Electrical specifications for the 425 arc identical to those for the 420 "Com- mando" microp hone. LIST PRICE: Model 425-$30.00 Modcl 425-G6-533.00. lncludcs 6" flexible gooseneck and mounting flange. Model 425-G 12-333.75. Includcs 12" flexible gooseneck and mounting flange. Modei 4.254 18-535.00. Includes 1 8" flexible gooseneck and mounting flange. CASE: Impact resistant polystyrene- brass. FINISH: Hright Chrome and non-rcflccting gray. CABLE: 7 ft., 2-cot~ducior,nun-delachahlc, shielded. DIMENSIONS: Lengtl~3II:ls", diameter 1S''. NEI WEIGIIT (Mic. and cabte): 5/4 Ib., packagcd weight y4 Ib. OPTIOKAL ACCESSORIES: Modcl A86A Cable Type Transformer. Model A25B Swivel Adapter. Modcl S38B desk sland.

Good quality, Ioiv-cost, controlled magnctic and crystal micruphones providing concealed-cablc gooseneck mouniing. Gray and chrome fin~sh blends with any associated equiprncnt. Electrical specifica~ionsfur the 410 and 4105 are identical to those for the 5 10C and 5 IOS microphones; 7 10G and 7 10GS have specifications identical to those for thc 7 10 and 7 10s microphones. LIST PRICE: Mudel 410-S19.OU Model 410s (with switch)-521 -00

Model 710GS (uith switch)-516.00 CASE: Die cast zinc. FINIS1 I : Gray and chrome. CABLE : 7 ft., fabric-covered, singlc conductor shielded. DIMEKSIOKS: 4%" high, I1!/lsl' wide, 1%~''deep. NET WEIGHT. 410 and 410s-Yg Ib.,piickaged wight 11/4 Ibs. 710G and 710tiS-% Ib.,package:ed weight 1% Ibs. SPECIAL PURPOSE MICROPHONES I -MICROPHONE REPLACEMENT CARTRIDGES

SPECIAL PURPOSE MICROPHONES MICROPHONE REPLACEMENT SOUND LEVEL MICROPHONE FINISH: 61 B-Baked black enamel. CARTRIDGES MODEL 98B99 61C-Aluminum and black wrinkle. Custom-made non-directional crystal mi- CARBON CABLE: 61B-Equipped with 7 ft. single crophone designed for scientific and indus- conductor rubber-jacketed shielded MODEL R10 trial sound measurement work-and for cable. Rugged microphone cartridge replace- those special applications that involve 61C-Equipped with 7 ft. detachable ment for "CB", "IOO", and "120" Series frequency response determinations, pro- single conductor plastic-jacketed Carbon Microphones. Furnished with duction testing; ambient noise levels, re- shielded cable. necessary mounting hardware and com- verberation measurements, etc. Protected plete installation instructions. from humidity by "Humi-Seal" foil wrap. ACCESSORIES FURNISHED: Com- Model R10 List Price $8.50 Features uniform frequency response; plete set of adapters including 8" ex- high sensitivity; high acoustical imped- tension rod, ball-tip, point-tip and MODEL 99A149 ance; freedom from electrostatic and elec- mounting bracket. Model 99A149 is the replacement car- tridge for cartridges used in microphone tromagnetic induction. SMALL CONTROLLED models: CB20, CB21, CB50 and 115. Model 98B99 List Price $110.00 LAAP-hlCTIP LAlPDhDUnhlEC Model 99A149 List Price $8.50 SPECIFICATIONS FOR MODEL98B99 The MC Series of small microphones are CRYSTAL LIST PRICE: $1 10.00 specially designed for use in vacuum-tube MODEL R7 TYPE: Crystal devices, such as small, compact hearing- Model R7 Crystal Microphone. Available FREQUENCY RESPONSE: 30-15,000 aids, , transmitters, dictating for service installation as a replacement CPS equipment-wherever size and weight are for the cartridges in the Shure Crystal important factors. They also are highly Microphones of the 707A and 708A Series, OUTPUT LEVEL: -58 db (0 db = 1 volt and other microphones of s~milardes~gn. per microbar) recommended for use in small transistor- type devices. The MC series are metal High output-48 db below 1 volt per POLAR PATTERN: Omni-directional cased for hum protection. They are rugged microbar. Supplied with rubber mounting CASE: Brass screw machine. rings and installation instructions. units, immune to mechanical shock, and Model R7 List Price $8.25 FINISH: Satin chrome to varying conditions of heat and humidity. CABLE CONNECTOR: Cannon XL-3- The MC Series of microphones have also MODEL 99A186 11 proven to be extremely usef~ll in con- The Model 99A186 replacement cartridge DIMENSIONS: 1%" diameter, 243/6aU cealed microphone applications. assembly for the 777 Series Slim-X Micro- long. NET WEIGHT: 3.8 oz. MCI 1-J (Circular) List Price: $12.50 phones. Crystal element metal-sealed for long life under adverse conditions of heat MC20A-J (Rectangular) List Price $14.00 and humidity. MC30-J (Rectangular) List Price: $20.00 Requires only one solder connection. VIBRATION PICKUPS Model 99A186 List Price $10.00 MODEL 61B, MODEL 61C SPECIFICATIONS FOR MODELS MCI 1, MC20A and MC30 CONTROLLED MAGNETIC Used for locating and measuringvibration ; MODEL R5 checking surface smoothness and for the TYPE: Controlled Magnetic solution of a wide variety of scientific and FREQUENCY RESPONSE: MC11- Direct replacement for cartridges used in 400 to 3,000 cps, MC20A-400 to the following Shure microphone models: industrial problems. No external moving 510C, 510MD, 510S, 520, 520SL, 505C, parts. The 61B has a triple moisture- 4,500 cps, MC30-400 to 3,500 cps 505K, 405C and 405K. Also ideal for re- sealed Grafoil Bimorph Crystal element. OUTPUT LEVEL: MCll-71 db (0 db placement of crystal cartridges in Shure The 61C has a Ceramic =I volt per microbar), MC20A-73 cases of the Model 707A and 708A Series, element. The units may be fastened to an db (0 db = 1 volt per microbar), MC30 where heat and humidity are a problem. object or used with the furnished exten- Supplied with rubber mounting ring. -76 db (0 db= 1 volt per microbar) Model R5 List Price $1 1.00 sion rod for point-to-point tests. IMPEDANCE: MCl I-1,000 ohms, Model 61B List Price: $ 97.50 MC20A-2,000 ohms, MC30-1,850 MODEL R5B Model 61C List Price: $125.00 ohms Model R5B is the reulacement cartridge CASE: Brass for cartridges used inLmicrophonemidas SPECIFICATIONS: 505B, 505T, 405B, 405T, 510SLB, 520SLB TYPE: 61 B-Crystal FINISH: Cadmium plated and 520B. Model R5B is ohvsicallv iden- 6 1C-Ceramic TERMINALS: MC11-Eyelet Solder tical to Model R5; but ioh impedance FREOUENCY RESPONSE: Low fre- Type, MC2OA-I %" flexible lead (150 to 250 ohms). Can be used in any type, MC30-Eyelet solder terminals R5 auulications which reauire a low Im- quency response dependent on the ter- pedance cartridge. minal resistance employed. DIMENSIONS: MCll (circular) 15/64" Model R5B List Price $1 1 .OO INTERNAL IMPEDANCE: 61B- diameter, 25/64'' thick, MC20A (rectan- Equivalent to .005 microfarad capac- ular) '%6" wide, 15/1~" long, 5h.5" thick, MODEL R4M itor. Recommended Load: 1/2 to 5 MC30 (rectangular) .5" wide, .5" long, The Model R4M controlled magnetic megohms. 61C-Equivalent to ,010 ,265" thick cartridge assembly is the direct replace- microfarad . Recommended ment cartridge for use in t!~ models 430, NET WEIGHT: MCll-12% grams, 425, 420 and 415 Shure Commando" Load: 1/2 to 5 megohms. MC20A-9.6 grams, MC30- microphones. CASE: Die-cast aluminum. 3.7 grams Model R4M List Price $15.00 1 CARBON COMMUNICATIONS MICROPHONES

The "Ten-Pour" features the high-impact "Armo=Dur'*corrosion-proof case.

Armo-Dur

2-way radio communications equipment. The "100 Series" Micm- Es phones are provided with a bracket for permanent placement in md 100 portable or mobile equipment. They fit naturally and comfortably Used around the world for police, taxi, bus, truck and commercial in the palm of the hand. They arelight, compact and nrgged units- applications-more than all other makes combined! Adopted as with a reputation for long-life performance under "rough 2nd standard microphone for G.E., Motorola, R.C.A. and others for tumble" operating conditions. InwDur DIwCarl 10M 1 lOls 1018 1011 102E 102E IDS Sug nsted replacement for: IMC, fbZ~ 101C. 101E. 103 Usi klw $30.00 1 $30.00 130.W $33.00 $30.00 $33.00 $31.00 m: Carbon Carbon Carbon Carbon Carbon Carbon Carbon Fr Wm* 3W 10 o,WO C,D.S. WW: Output Lowk 5 db below 1volt lor 1W mlcrobar spesh slgnal Inpedalw: Recommended load: M to lWohms Polar hWu: Omni-dlre~lional Caw Hiah-Impact "Armo-Dut" I 01%Cast Zinc Rnirh: Gray Blue Gray-Wrinkle Finlsh 11" retrsded and 5' extandad cable Cablm: Capper wiled card wlth Tinsel coil cord Cop er coil wrd ~i~~~lcord Cop er coil cord tr~mmedand tlnned loads wkh Amphenol 1 with trimmed With wit1 Amrhenof MQM Plug and tinned leads MC4M Plug Heavy duty push-to-talk switch DPST normally open SPST normally open WrlY: switch to control SPST normally open relay swltch DPST normally open switch to mntrol refay swttch (no mlcrophons (no microphone swi!ch) m~crophoneand relay. microphona switch) 1 relay Dlrnladrn~: 3fY0 high, 2%" wide, 14#4" deep 3W high 2%" wide. 21h" deep HI1 WIIW: % lb. 1 lb. hhgad Wcigilt: Clh. 1% Ib.

CoiIed Cord rcpIacement for Shure "100" and "CB ...... -.. - ...... - . Model Ust Rirb Typo Co~dudorr twmilulivri urn ClDC Tinsel 3 conductor Trimmed and'tinned leads With General Electrlc EMlOA and Shure 505K Micro. 512'00 1 conductor shlildad and Amphenol MC4M plug phones (Die cast zinc case). CllE 112'00 Tinsel 3 conductor Trimmed and tinned leads Wlth General Electric EMIOA-2 aid Shure 4058 1 conductor sh~eided and Amphenol MC4M plug and 405KB Microphones ("Armn-Our" case). 3 conductor, ClPE s9"5 'Opper 1 condu~torshielded Trirnmnd and tinned leads Wlth Shurn 404C 4 conductor Cllc slO,OO COppsr 2 conductor shlilded Trimmed and tinned leads With Shure 4048 ~15~ $6.25 Copper 4 conductor With 405T, 505T, "CB" and "100" Snrles Mlcro. unshielded' Trimmed and tlnnsd leads phones. ClBC $9.50 Tinsst 4 conductor. Trimmed and tinned leads unsh~elded and Amohenol MC4M nlu~ Wlth General Electric equipment. b ---. Cl7C $7.75 Tinsel 4 conductor, Trlmmed and tlnned leads unshielded with spade lugs With Motorola equipment. MIC $9.50 Copper 4 conductor, Trimmed and tinned leads unshlelded and Amphenol MC4M plug Wlth Motorola equipment. ~1s~ $9.50 Tinsel 4 conductor. Trimmed and tinnod leads unshielded and Amphenot MC4M plug With Motorola equipment,

m& 115 M~CR~P~~NEFINISH: Blue Gray Wrinkle Designed for use with small portable and mobile transmitters. CABLE: 3 conductor, standard coiled cord, 11" retracted, 5 Ft. Only 2" in diameter and I MI' thick. Has same operating char- extended acteristics as " 100 Series" Carbon Microphones. Replaoement for Mfgrs. Model Nos. CBZO, CBZI. SWITCH: Equipped with a heavy-duty, push-to-tdk switch LIST PRICE: $31.00 DIMENSIONS: 2" in diameter, 1%" thick CASE: Aluminum NET WEIGHT: 12 oz.,packaged weight 1 Ib., 8 oz. MICROPHONE ACCESSORIES

MICROPHONE SWITCHES DESK STANDS

"@RIP-TO-TALK SLIDE-TO-LOCK" SWITCH TA K E-APA RT STAN D Heavy-Duty Switch withstands the most severe field require- Model S34B. Hand low-cost gray stand for dwk or hand use. ments of paging and dispatching systems. Ideal for Police, One twist of wood xandle locks it securely in base for use as a Taxicab, Railroad, Airport, Bus Truck, and all emergency table stand, or releases handle for use in hand. Metal base. communications work. Can be used with Shure conn&pr- Suitable for use with models 510, 520, 707A and 710. type crystal, dynamic and carbon microphones of any Im- MODEL S34B LIST PRICE $4.50 pedance. Fits handily on Shure S36A Desk Stand. Rich satin chrome finish. BROADCAST DESK STAND MODEL A88A LIST PRICE $12.50 Model 533. Baked Bronze Finish. For use with Models 300, ON-OFF PRESSTO-TALK SWITCHES 333, 525 and 535. WST PRICE $15.00 MODEL S33I3-Same as S33- in black finish. For use with QukkIy attached to any cable-connector type Shure micro- Model 330, 530, 544, 545, 546, 556% 415, 425 and 430. phone. These are plug-in units which uire only a screw- driver to install. Suitable for use with% following Shure LlST PRICE $15.00 microphpnes: Models 55, 55A, 551, 55C, SSS, 51, 315, 737A and 708A. MODERN DESK STAND Model A83B. Rotary-type "On-OR" switch, microphone Model S36A. Streamlined gray Dwk Mount fits all Shurt shorted in "off" position. When "turned on," it stays on until connector-type microphone~r including 5 1. 5 1S, 533, 3 15, turned off. 315S, 540s and 737A. Acaornmodates A25-type swivel adapter. MODEL A83B LIST PRICE $11 .OO M&I handle adapter provided for mounting models 440, 510, 520,710 and 707A. Idea1 for use with the Shure switches listed Mode1 A84B. Momenta Premto-Talk "On-Off" switch, on this page. microphone shorted in "o$' position. Press-tls on, release- MODEL S36A PRICE 16.50 it's off. LIST LIST PRICE MODEL A84B $1 1.00 SPECIAL STAND Model A85C. Momentary Press-to-Talk Relay control switch, open. not This stand is a heavy diecast base. Metal screw machine stud normally Microphone circuit switched. connects microphone adapter to stand base. MODEL A85C LlST PRICE $11.50 Model. S38 (Bronze) for use with 777 Series microphonm. Model S38B (Black) for use with "Commando" microphone CABLE-TYPE TRANSFORMER Models 415 and 430. MODELS 538 AND S38B LIST PRICE M.50 Model A86A is a high-quality, cable-type transformer which makes it convenient to run a long microphone line from a low impedance microphone to a high impedance amplifier. SWIVEL ADAPTER Connection terminals are easily accessible, and compression fittings crimp the microphone and amplifier inputs. The A86A Model A25 (Bronze). To be used with model 525,535 and 777 matches 33-50 ohm ?nd 150-250 ohm microphones to high series microphones-For use with standard deskor floor stand. impedance amplifier inputs. Solves the problem of excessive Model AZSB (Black). To be used with models 530, 415,. 425, high frequency loss and objectionable hum pickup when long 430 and 545 microphones-For use with standard desk or lengths of microphone cable are necessary. floor stand. SPECIFICATIONS FOR MODEL A86A MODEM A25 AND A25B LIST PRICE $5.50 LIST PRICE: $17.50 FREQUENCY RESPONSE: 20 to 20,000 cps plus or minus LAVALIER ASSEMBLY 1 db A28L. For IMPEDANCE: Matches 35-50 ohm and 150-250 ohm micro- Mod& use with Slendyne Model 525, 530 and 535. phones to high impedance amplifier MODEL A28L LIST PRICE $4.50 CASE: Compact, sturdy and magneticam shielded steel Model A34L. For use with Commando Models 41 5, 420 and FINISH: Two-tone gray 430. CABLE: 2 ft. MODEL A34L LIST PRICE $3.50 DIMENSIONS: 2%" long, 1 %" diameter Model A37L. For use with Slim-x 777 series. NET WEIGHT: % lb., packaged weight 1 lb. MODEL A37L LIST PRICE $1.00 I CRYSTAL and CERAMIC PICKUP CARTRIDGES

"Twin-Lever" Cartridges For 33%, 45 And 78 RPM Records SHURE NEEDLE Fig. A MODEL ILLUS- LIST OUTPUT NFj!iE RESPONSE NET NEEDLE LlST NO. TRATION TYPE PRICE LEVEL FORCE TO NO. PRICE WC20 # Fig. C Ceramic $ 9.50 .58V 2%-3 grams 12,000 cps 2% grams A20S $ 3.50 I W21F' Fig. B Crystal 8.90 1.5V 6 grams 10,000 cps 4% grams A63MG 1.50 Fig. B W31AR Fig. A Crystal 7.50 2.1V 7 grams 7,500 cps 5% grams A53MG 1.50 I rlne uroove Cartridges- For 33%. 45 RPM Records SHURE NEEDLE LlST OUTPUT NEDNiERESPONSE NET NEEDLE LlST LEVEL FORCE T 0 NO. PRICE MG. STD. WC65 Fig. H Ceramic $1450 .5V .7V 4-6 grams 15,000 cps 7 grams A6S $ 5.95 I I - I I WC6TMA 7 grams A6S 5.95 Top Mount, Fig. R Ceramic 14.50 .5V .7V 4-6 grams 15,000 cps 1 wg 1 Fig. J crystal 1 !3:3; 3.5V 5.OV 11 grams 10,000 cps 7 grams A9 3.50 WClO5 Fig. H Ceramic .78V 1.OV 7 grams 12,000 cps 7 grams AlOS 3.50 WClOD5 Fig. H Ceramic 34.00 .78V 1.OV 7 grams 12,000 cps 7 grams AlODS 28.00

Turnover Cartridges For 33%, 45, And 78 RPM Records

MODEL ILLUS- LIST OUTPUT RESPONSE NET SHURE NEEDLE NO. TRATION TYPE PRICE LEVEL NF:iE NEEDLE LlST FORCE TO N 0. PRICE - Fig. G

' Fig. H

All ~urpo~eSingle Needle Cartridges- For 33%, 45, 78 RPM ReccrA- MODEL ILLUS- LIST OUTPUT RESPONSE NET SHURE NEEDLE NO. TRATION TYPE PRICE Ng:iE NEEDLE LlST LEVEL FORCE TO NO. PRICE ' Fig K MG. STD. W26 Fig. B Crystal $ 6.50 .87V 1.OV 8 grams 8.000 cps 4% grams A67U $ 2.50 WC38 Fig. A Ceramic 7.50 .9V .92V 9 prams 10,000 cps 5% grams A58U 1.50 Lm' Fig L W66B Fig. 0 Crystal 7.00 2.OV 2.3V 8 grams 4.500 cps 12 grams A66U 1.50 W70 Fig. P Crystal 4.95 3.OV 3.8V 10-15 grams 5,000 cps 16 grams A77U 1.50 D- FIE M Standard Cartridges For 78 RPM Records SHURE NEEDLE NEEDLE I LIST / NO. PRICE - Fig N W56N-I Fig. N Crystal $10.00 4.3V 1 02. 10,000 cps 12 grams A68D $ 3.50 Dual Wt. W68t Fig. 0 Crystal 7.50 1.6V 1 02. 4,500 cps 25 grams A62A 1.50 or 12 grams Dual Wt. W78t. Fig. M Crystal 5.55 4.OV or 2. OV 1 oz. 6,000 cps 25 grams None None or 12 grams

+W~th,453 Mount for Oak Changer. **Cutter-Cartridge for W~lcox-Gay"Recordette." Equipped w~thbifurcated needle. Fig. P tDuol-Weight Cartridge. With weight-slug, net weight 25 grams. Without weight-slug, net weight 12 grams. fDual.We~ght Cartridge. Has some weight asModel W68, wlth same net weight differential. In addition, Model W78 has capoci tor, furnished as occessory. W~thoutcapacitor, output is 4.0 . With capacitor, output is 2.0 volts. $Not a turnover type. Needles ore set into tracklog posit~onby lngeolour "Tw~nLever" needle shift system. itFor Columbio 16% Hiohwav Hi-Fi Recordc. b~odelW9 hor ~opocytorihrnished as accessory. Without Copocitor output is as shown above. With Copocitor oulput is 1.7 volts for Fig. R 33%. 45 RPM; 2.5 volts for 78 RPM. ?$Model W72 has a slip-on Capacitor iurnirhed as on accessory. With the Capacitor, output is 2 voits for 78 RPM, 1.5 volts for 33!4 45 RPM. Without the Capacitor, output is 4 volts for 78 RPM. 3 volts for 33%. 45 RPM. A Top mounting for Mognavox cartridge replacement, MAGNETIC RECORDING HEADS

Fig n Fig. B Fig. C :I- E hg. F +tor& Raunrd- Record- Stereo PIqvbaek- 'Playbrck Playback Stereo Playback Only Record- Lraar A- El;**m Monaural Record- Playback EraBe

TECHNICAL DATA-MABNETIC TAPE AND WIRE RECORDING HEADS

Racmrdlq Blss & Entl SM. Rswllng O-nr En+ lml~dana Irn~d~neo MOM 8lmd Frwrm bvd Blsr Cwmt hml Eura COV Wd-Plahk CdI 3.75'/ per sac 25KC .05 ma 1.25 ma 27 ma 750 ohm at 25KC 1450 ohm at 1000 cps #IS (Rt. A) 7.5 " per sac 50KC .05 ma 1.5 ma 30 ma 1300 ohm at 50KC 1450 ohm at 1000 cps 3.75" per sac DC ,095 in& -35 ma 25 ma 12 ohm 180 ohm 3.75" par sec 25KC .03 ma .72 ma 27 ma 750 ohm at 25KC 5800 mhm at lDOO tps MI (FIG *I 3.75" per stc DC ,056 ma .24 ma 25 ma 12 ohm 556 mhm 3.75" per sec 25KC .03 ma .80 ma 5500 ohm at 1000 cps MB 3.75" per see DC .07 ma .26 ma 556 ohm 3-75" per sec 25UC .06 ma 3.6 ma 1860 ohm at 1000 cps (np Bl 3.15" per sec OC .I75 ma .42 ma 180 ohm 7.5 " per sac SOKC 25 ma 1700 ohm at 50KC TElICJ . 7.5 " per see 75KC 26 ma 2250 ohm at 75KC 7.5 per sec IOOKC 26 me 2670 ohm at lOOKC 3.75" per sec SO KC 10.5 ma 1500 ohm at 50KC TDlJ (Fit E) 3.75" per set 75KC 11.5 ma 1825 ohm at 75KC 3.75" per sec IOOKC 12.5 ma 1975 ohm at 100KC TU4l.J Fa Dl Uppr lhsind ! 7.5 " par see 65KC .08 ma 1.25 ma 1150 ohm at 1000 cps 7.5 '' per ssc 3300 ohm at 1000 cps Lmr":,"$Pd / 7.5 per see 65KC 50 ma 2100 ohm at 65KC TMtC.I(Fl&C) 7.5"persec 75KC ,040 ma 1.0 ma 4000 ohm at 1000 cps TRI0.J 7.5 " per see 75 KC .05 ma .6 ma 4000 ohm at 1000 cps TR#.J (Fb, F) 3.75" per 7.5 " per set 75KC -04 ma .38 ma 2600 ohm at 1000 cps

*Erase current chosen for 50 db Erasure of Saturated 400 C.P.S. Recording. Recordin Medium-Minnesota Mining & Mfg. Co., Taps No. 111 ~ressure$adForce {Area-,025 sp. In.) Two ounces. RECORDING HEAD DIMENSIONS MpdOl TR2lC.J F1 . C Mpdds 815 11W (3A L @I8 Width ,600" Depth .8Zb9 Aelght.775" Mudel TElIC-I Width 1.24[1" Depth 1.03)" Height .695" Width ,366" Oeoth ,641'' Height ,468" MOMTRI-1 Width .633" Depth .8?5" Height ,469'' MOM (KC 8) Mdd TUU FIE E a7 Modml TW-J (?I F)----- Width ,552" Depth ,830" Helght.765" Wtdth .570" Depth ,625 Height ,570" Width -300" Depth .486" hlght ,560"

NUMERICAL LIST OF SHURE TAPE HEADS USED IN ORIGINAL EQUIPMENT

back and mon-

.- *Operatrng data only. 815 does not replace Shure high-fidelity stereo products

THE ALL-IMPORTANT SOURCE OF SOUND

True high fidelity sound re-creation, begins at the source of sound. Just as a camera is no better than its lens, a SPEClALlZED STEREO PRODUCTS

STEREO LINE BROADCAST STEREO EQUALIZER High quality, low noise, stereo line pre-amplifier providing Compensates output of stereo and monophonic magnetic additional gab for use with magnetic stereo phono cartridges cartridges for flat, RIAA and roll-off responses, when used and microphones. Provides flat output response from 30 to with inputs designed for low impedance microphones. 80,000 cps =1 db. Low output impedance permits use of SPECIFICATIONS FOR MODEL M66 longer cable lengths (up to 50 feet) without loss of gain or Net Price: f 60.00 deterioration in response when used with magnetic phono Frequency Response Deviation (with all Shure Slcreo Cartridges) : cartridges, mkrophones, etc. 30 to 20,000 cps f l db. 30 DB Channel Separation: 30 to 20,000 cps. SPECIFICATIONS FOR MODEL Me0 Low Output Irnpcdance: 250 ohms. Provision for 125 & 500 ohms. Net Price: % 19.95 Circuit : 9-terminal network-3-terminal input. 4-terminal balanced Gain: 17 db or 7 to I (5 mv. input gives 35 mv. output). Circuit output with two convenient ShieId terminals for unbalanced change information provided to give one-third and two-thirds output. output. Insertion Loss: Approximately 28 db. (varies with frequency and Impedance: lnput47,CUO ohms.-Output-5,000 ohms. impedance.) Hum & Noise: Nominal 64 db below rated output. Furnished Accessories: Supplied with escutchcon. mounting bolts, Dimensions: 534'f x 2%" x 3a$'f. L-shaped mounting bracket, and long control shafts for mount- varying up Net Weight: 2 Ibs. ing through panel thicknesses to 1% inches. Dimensions: 7%'' x 31/fLr' x 3" overall. 54%" x 3 5" x 3" excluding control shafts. STEREO CONVERS,ION PREAMPLIFIER Net Weight: 1'/1rl lbs. Provides with amplification for conversion of ceramic inputs to magnetic inputs. Gives smoother, more MODEL M3LS STEREO CARTRIDaE natural sound. As an added feature, 60 db of amplification The M3LS Stereo Cartridge is an individually selected and without equalization is also provided. Permits the use of a tested laboratory standard M3D Stereo Professional Dynetic magnetic cartridge with "package" consoles supplied with a Phono Cartridge. Each M3LS, its corresponding box, individ- ceramic cartridge. Also provides pre-amplification and equal- ual response curve and specifications are serially numbered. ization functions for other inputs (phono, tape. microphone). The M3LS is especiaIIy suited for: (I) Laboratory measure ments. (2) Cross-checking & of associated high SPECIFICATIONS FOR MODEL M65 fidelity components. (3) Checking master recordings. Net Price: %24,00 Each cartridge carries a 3-year guarantee (not including needIe Gain: Phono: 44 db (5 mv input produces -76 v. output) wear or damage to needle from abuse or mishandling.) Special: 45 db (5 mv input produces .88 v. output) Tape: 40 db (5 mv input produces .5O v, output) SPECIFICATIONS FOR MODEL M3LS Microphone: 63 db (2 mv input produces 2.8 v. output) Net Price: Model M3LS-$75.00 Frequency Response: f 1.5 db of each function's nominal Model N3LS Replacement -$25.00 (NOTE: M3LS characteristic from 25 cps to 15,000 cps. must be returned to Shure factory for installation of replace- Equalization: Phono: RIAA equalization (with additional treble ment stylus. At this time, new calibration curve and spccifi- boost of approximately 3 db at 10,000 cps to complement the cations will be issued as part of replacement stylus charge). high frequency characteristic of most magnetic cartridges). Channel Separation: 23 db minimum at 1 KC.; 15 db minimum Special: A Shure-developed magnetic phono equalization cir- at I0 KC. cuit for use with high impedance amplifiers normally used with Channel to Channel Balance: 1.5 db maximum (1 KC on mono- ceramic phono cartridges. aural record]. Tape: NARTB equalization. Frequency Response: 30 to 15,000 cps +2 db. Microphone: Flat response. *3 db from 20 ta 12,000 cps: Output : 5.0 mv k2 db per channel at 1,000 cps. Input Impedance: 47,000 ohms (all functions). Recommended Load Impedance: 47,000 ohms. Compliance: 4.4 x 10-1 centimeters per dyne minimum; 7.3 x 10-6 Output Impedance: Low output impedance (less than 5000 ohms centimeters per dyne maximum at 80°F. at 10,000 cps for phono, speciaI and tape functions). Tracking Force: 3 to 4 grams. Channel Separation: 40 db. Inductance: 420 millihenrys. Channel Balance: f 1 db at IOMI cps. DC Resistance: 280 ohms. Hum-Noise: 50 db below rated output. Terminals: 4 terminals. Adaptable to 3 terminal arms. Overall Dirncnsions: Length 6%"; Width 3H"; Height 3%". Mounting Standard HIr centers. Net Weight: 1 Ib. 14 oz. Stylus: .0007" diamond stylus. HIGH FIDELITY PHONOGRAPH CARTRIDGES

Painstakingly tested. proved, perfected-these superb ShureStereo with incisive clarity. They are singularly smooth throughout the Dynetic moving-magnet cartridges are designed specifically to normally audible spectrum.. .and they are superior to other sep- satisfy thecritical ear of the most discriminating music lover. ..the arate stereo cartridgesin the recreation of clean lows, true-to-per- mostexactingaudiophile.They separatediscstereosoundchanneIs formance mid-ranges and brilliant highs. Completely compatible!

The M8D Standard Stereo Dynetic is de- Tracking Force: 5 to 8 grams. signed for dependable use in record changers. inductance : 420 It features clear, hum-free reproduction and trouble-free operation at low cost. D. C. Resistance: 280 ohms. SPECIFICATIONS : Terminals: 4 terminals. Adaptable to 3 term- inal arms. Channel Separation: More than 20db at 1000 cps. MOUNTING :Standard W" and &" centers. Frequency Response: 30 to 15,000 cps. STYLUS: .OM)7" diamond stylus. Output Voltage: 5 mv per channel at 1~ cps, Model M8D Standard Stereo Dyne tic cartridge I . . . inchding -0007" diamond stylus. Recommended Load Impedance: 47,000 Net: $16.50 Model MBD ohms. Model N8D Stereo Stylus assembly for M813, STAN OARO Compliance : vertical, Lateral 3.0 x lo-'' cen- including .0007" diamond. 8TERE0 DYNETIC timeters per dyne. Audiophile Nct: $8.25

The M7D Stereo Custom Dynetic is de- Tracking Force: 4 to 7 grams. signed for the economy-conscious consumer inductance: 420 who wants a quaIity Stereo Phono Cartridge at moderate cost. D. C. Resistance:'280 ohms. SPECIFICATIONS : Terminals: 4 terminals. Adaptable to 3 ter- minal arms. Channel Separation: More than 20db at lo00 cps. MOUNTING: Standard $$" and dK"centers. Frequency Response: 20 to 15,000 cps. STYLUS: .0007" diamond stylus. Output Voltage: 5 mv per channel at 1000 cps. Model M7D Custom Stereo Dynetic cartridge . . . including diamond stylus. Model M7D Recommended Load Impedance: 47,000 Audiophile Net: 524.00 ohms. Model N7D Stereo Stylus assembly for M7D, CUSTOM Compliance: Vertical, Lateral 3.5 x lo-"cen- including .OM)7" diamond, STEREO DYNETIC timeters per dyne. Audiophile Net: $12.00

The M3D Stereo Professional Dynetic is Compliance: Vertical, Lateral 4.0 x lo-" cen- the premium stereo phono cartridge. It re- timeters per dyne. flects quality control of a high order, based Tracking Force: 3 to 6 grams. on critical tolerances in all performance Inductance: 420 millihenrys. b -I, characteristics. D. C. Resistance: 280 ohms. SPECIFICATIONS: Terminals: 4 terminals. Adaptable to 3 ter- minal arms. ": rC Channel Separation: More than Mdb at MOUNTING: Standard 5" centers, loo0 cps. STYLUS: .0007" diamond stylus. 20 Frequency Response: to ls,OOO cPs Model M3D Professional Stereo D netic car ... adel M30 (k3 db). tridp . . .including .0007" diarnonJstylus. - Output Voltage: 5 mv per channelat 1M)O cps. Audiophile Net: 545.00 PROFESSIONAL Model N3D Stereo Stylus assembly for M3D, STEREO DYNETIC Recommended Load Impedance: including -0007'' diamond. 47,000 ohms. Audiophile Net: $22.50

For thost who prefer monophonic cartridges Model M5D-has .001" diamond for use with monophonic records, Shure offers the with micro-groove records, 33&, 45 r.p.m. outstanding Model M5 D Professional Model M6S-has .0027" sapphire for use Dynetic. with standard records, 78 r.p.m. C SPECIFICATIONS: Model MSD Monophonic Pmfessiona! Dynetic Frequency Response: 20 to 20,000 cps. Phono Cartr~dgefor LP records lncludlng NSD .MI'' diamond stylus. Audiophile Net: $27.50 Sensitivity: Output at f ,000cycles-21 rnilli- ~~d~lM6S M~~~ honic pmfessbna! ~~~~~i~ volts for 10 cmslsec. Phono Cartridge &i 78 rpm records ~ncluding Recommended -0027" Load Impedance: 27,000 Audiophile Net : 11 5.00 ohms. Model N5D Monophonic Professional Dynetic Model M5D Compliance: 3 x 10-6 centimeters per dyne. styluswith .001~diamond tip. MONOPHONIC DYNETLC Tracking Force: 2 to 6 grams. Audiophile Net : $1 6.50 Inductance: 350 millihenrys. Model N6S Monophonic Professional Dynetic stylus with ,0027" sapphire tip. D. C. Resistance: 440 ohms. Audiophile Net: $5.00 . . .for Utmost Performance in superior high fidelity systems

NEW -.JSTEREO- DYNETIC -PHONO CARTRIDGES featuring THE INCREDIBLY COMPLIANT N21D TUBULAR, DIAMOND S

To meet the overwhelming demand for a separate stereo cartridge that will enable tracking at extremely low (2-2% grams), Shure announces these worthy additions to the incomparable family of Stereo Dynetics.

SPECIFICATIONS : D. C. Resistance: 280 ohms. Channel Separation: More than 20db Terminals: 4 terminals. Adaptable to at 1000 cps. 3 terminal arms. Frequency Response: 20 to 20,000 cps. MOUNTING: Standard W" and A'' centers. Output Voltage: 4 mv per channel at IOOOcps. STYLUS: .0007" diamond stylus, Load Impedance: 47,000 ohms' Model M7D Custom Stereo Dynetic cartridge Compliance: Vertical, Lateral 9.0 x 10-6 . . . including Model N21D. .0007" centimeters per dyne. diamond stylus. Audiophile Net: $36.75 Tracking Force: 2 grams optimum. Forces Model N21D Stereo stylus assembly for greater than 2% grams should not be used. MODEL M7D WlTH M7D, including .0007~diamond, N2lD TUBULAR STYLUS Inductance: 420 millihenrys. Audiophile Net: $24.75

SPECIFICATIONS : Inductance: 420 millihenrys. Channel Separation: More than 20db D. C. Resistance: 280 ohms. at 1000 cps. Terminals: 4 terminals. Adaptable to Frequency Response: 20 to 20,000 cps 3 terminal arms. (?2% db) MOUNTING: Standard 96'' centers. Out~utVoltage: 4 mv per channel at 1000 cps. STYLUS: .0007" diamond stylus. Model M3D Professional Stereo Dynetic car- Recommended Load Impedance: 47,000 ohms. tridge.. . including Model NZlD, ,0007" Compliance: Vertical, Lateral 9.0 x 10-6 diamond stylus. A~~diophileNet: $47.25 MODEL M3D WlTH centimeters per dyne. N21D TUBULAR STYLUS Model N21D Stereo Stylus assen~blyfor M3D, Tracking Force: 2 grams optimum. Forces including ,0007" diamond. than 2% g&ns should not be used. Audiophile Net: $24.75

CAUTION: These cartridges are to be used @y in manual tone excess of 2% grams, you should select either the Shure M3D, cirms at?(/record clzan~erarms capable of tracking at two grams M7D or M8D cartridge (see page 25). . For IIIOSE applicatiot~scalli~~g for tracking forces in

Since a stereo cartridge is only as good as the tone arm which houses it, Shure offers the premium-quality Professional Tone Arm (M232 & M236) with either of the above cartridges installed. This perfect "marriage" of separate tone arm and cartridge insures top quality at reasonable cost. Audiophile Net Model M232 Professional Tone Arm with an M7D Cartridge and N21 D Tubular Stylus installed...... $66.70 Model M236 Professional Tone Arm with an M7D Cartridge and N21D Tubular Stylus installed...... $68.70 Model M232 Professional Tone Arm with an M3D Cartridge and N21D Tubular Stylus installed...... $77.20 Model M236 Professional Tone Arm with an M3D Cartridge and N21D Tubular Stylus installed...... $79.20 THE ABOVE MODELS ARE PRE-BALANCED . . . ALSO PRE-SET FOR TRACKING AT TWO GRAMS PRESSURE, THE CORRECT TRACKING FORCE FOR OPTIMUM PERFORMANCE. SHURE PROFESSIONAL TONE ARM 1

Combines more important features than any other independent tone arm. 1

balance (without altering overall arm length), tracking force (0-8 grams), and overhang. Floats the needle over the record . . . smoothly-without "drag"- without "skipu-without unnecessary Cable-Plug Assembly (and ruinous) force. Furnished with cable Eliminates Soldering having plug on each end to simplify and speed up installation (eliminates soldering).

4TIONS: MODELS M232 - MDgfi PROFESSIONAL TONE ARMS

NET F 3E : TONE ARM M232, for 12" records. TONE ARM M236, for 16" reco-"- ...... $31.95 Model A23H Extra Plug-In ED ACCESSORIES: Arm rest

M236-14%" long the incomparable SHURE

INTEGRATED TONE ARM AND CARTRIDGE . . . cannot scratch records

. . . for critical broadcast and recording applications The overwhelming first choice of perfectionists who appreciate the full importance of "integrated" tone-arm and cartridge to optimum stereo performance. Tracks at incredibly light 1 '/2 - 2% grams-with unparalleled fidelity . . . absolutely minimizes record wear, and CANNOT scratch records! We urge you to make lis- tening tests of this unit before buying any stereo cart- ridge or arm-you'll hear the difference. The Studio Stereo Dynetic has a special advantage for those music lovers who like to "index." The cartridge stylus is placed far in front, making it extremely easy for you to position the stylus on the exact spot of the record you want to play. Still another feature of the Studio Stereo Dynetic is the fact that the stylus can be changed in the home- without tools-within ten seconds.

I AUDIOPHILE TECI IZY~ZALINFORMATION

MONOPHONIC UNITS STEREOPHONIC MONOPHONIC SPECIFICATIONS M216; M212 M16; M12 Model M16-Monophonic Studio Dynetic for records up to 16" including MI cartridge with .0007" Diamond Stylus. Audiophile Net: $79.50

Tracking Force 1%-2% grams 1-2 grams Model M12-Monophonic Studio Dynetic for records up to 12" including MI cartridge with ,0007" Diamond Stylus. Frequency Response 20-20,000 cps & 2% db 20-20,000 f 2 db Audiophile Net: $79.50 Channel Separation over 20 db at 1000 cps Model MI-Monophonic Studio Dynetic Cartridge for LP records with Sensitivity: Output at 1000 cps 4.5 mv per channel 14 mv for 10 cms/sec .0007" Diamond Stylus. Audiophile Net: $42.00 (On Westrex /4 Test Record) Model M2-Monophonic Studio Dynetic Cartridge for 78 rpm records with .0027" Diamond Stylus. Audiophile Net: $42.00 Recommended load impedance 47.000 ohms 10,000 ohms Compliance: (Vertical,* Lateral) 9 x 10-6 cms/dyne 8 x 10-bcms/dyne Model N1-Replacement Monophonic Studio Dynetic Stylus with .0007" Diamond tip. Audiophile Net: $21.00 Inductance 400 millihenrys 130 millihenrys O.C. Resistance 600 ohms 180 ohms Model N2-Replacement Monophonic Studio Dynetic Stylus with .0027" Diamond tip. Audiophile Net: $21.00 Needle tip Mass 1.3 milligrams 1.25 milligrams Stylus .0007" diamond ,0007" diamond Model A29R-Adapter Plate for use with Model MI2 or M212 for mount- ing purposes with the Rek-0-Kut turntable. Audiophile Net: $2.40 'applies to stereo units only STEREOPHONIC UNITS Model M2lbStudio Stereo Dynetic for records up to 16" including M21 Model M216 Model M212 cartridge with .0007" Diamond Stylus Audiophile Net: $89.50 DIMENSIONS Model M16 Model M12 Model M212-Studio Stereo Dynetic for records up to 12" including M21 cartridge with .0007" Diamond Stylus. Audiophile Net: $89.50 Over-all length: 14% " ll%," Model M21-Studio Stereo Dynetic Cartridge with .0007" Diamond Stylus. Stylus tip to center of arm base: 11" 8%' Audiophile Net: $49.50 Arm base diameter: 2" 2' Model NZlDReplacement Stereophonic stylus assembly for Model M21, Range of height adjustment: I%* 1%" M216, M212; .0007" Diamond tip. Audiophile Net: $24.75 Arm pivot to turntable center: 101P/J2" 8%" Model A30C-Stereo Cable Assembly for connecting M212 or M216 to Net weight (arm and cartridge): 11.1 02. 10.6 02. preamplifier and amplifiers. Assures maximum performance and greatest 1 ease of installation. Audiophile Net: $1.95

SHURE BROTHERS, INC. 222 HARTREY AVENUE EVANSTON, ILLINOIS, U. 5. A. Phone: DAvis 8-9000 Chicago Phone: SHeldrake 3-1600 Cable Address: SHUREMICRO Printed in U. S. A.