NOVEMBER 1966 with High
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NOVEMBER 1966 6Oc ... the authoritative magazine about high fidelity Opera at Lincoln Center Opera at home with high - fidelity stereo and video www.americanradiohistory.comAmericanRadioHistory.Com sc TT Scott 388 120 -watt FET AM/FM stereo receiver outperforms finest separate tuners and amplifiers The new 120 -Watt solid-state 388 is exclusive 3 -Field Effect Transistor front bandwidth, 20-20,000 Hz; Cross modulation rejection, 90 dB; Usable sensitivity, 1.7 µV; specifically designed for the accomplished end*, which approaches the maximum Selectivity, 40 dB; Tuner stereo separation, 40 audiophile who demands the best ... and theoretical limit of sensitivity for FM mul- dB; Capture ratio, 2.5 dB; Signal/noise ratio, then some. Every feature ... every per- tiplex reception. The 388 offers virtually 65 dB. Price, $529.95. formance extra that you'd expect to find flawless reception of both local and distant Scott ... where innovation is a tradition in the finest separate tuners and ampli- AM, too . thanks to Scott Wide -Range fiers is included in the 388 ... along with design and wide/ narrow switching for AM many features that you won't find any- bandwidth. ° Patents pending 0 SCOTT® where else. The 388's enormous power 388 specifications: Music power (at 0.8% har- H. H. Scott, Inc., Dept. 35.11 111 Powdermill Road, output, suitable for the most demanding monic distortion), 120 Watts @ 4 Ohms load; Maynard, Mass. 01754. Export: Scott International, applications, is complemented by Scott's Frequency response, 15-30,000 Hz ±1 dB; Power Maynard. Mass. Prices slightly higher west of Rockies. Subject to change without notice. We reserve the right to make changea and improvements without notice. For your free copy of Scott's 16 -page full -color illustrated 1967 Guide to Custom Stereo, Circle Reader Service Number 50 Check No. 50 on Reader Service Card. www.americanradiohistory.comAmericanRadioHistory.Com November, 1966 Vol. 50, No. 11 Number 39 in a series of discussions by Electro -Voice engineers Successor to RAD10. Est. 1917 AUDIO SANFORD L. CAHN Marketing Director GEORGE PORTER C. G. McPRouD Art Director Editor and Publisher THOMAS WALSH DANIEL J. TOMCIK Asst. Art Director Chief Engineer, LARRY ZIDE Contributing Editors Organ Division Managing Editor LEE IRGANG JOSEPH GIOVANELLI Circulation Manager HAROLD D. WEILER HAROLD LAWRENCE R. KENNETH BAXTER Today, electronically -aided musical in- Video Editor CHESTER SANTON Production Manager struments dominate much of popular wind instru- BURSTEIN music. Indeed, conventional EDWARD TATNALL CANBY HERMAN HENRY A. SCHOBER ments may go almost unheard in a Music Editor BERTRAM STANLEIGH Business Manager group that features electronic guitars and organs. That balance may be upset, however, AUDIO Articles with the introduction by H. & A. Selmer, Inc., Elkhart, Indiana of their new Vari - Trackability 19 James H. Kogen tone electronic saxophone. To their pro- fessional saxophone, a small ceramic High -Quality Phono Preamp microphone has been added. A control with FET's 26 William A. Rheinfelder box is mounted to the body of the sax Simulated "Live vs. Recorded" Test and is connected to a combined preamp/ for Loudspeakers 33 Edgar Villchur power amplifier/speaker unit. An Amplifier for the Armchair In addition to 75 watts of straight ampli- Listener 38 R. E. Baird fication (continuous sine wave rating) a variety of special Part 10 52 Norman H. Crowhurst the Varitone boasts Audio Measurements Course, effects. Tone control tabs permit a boost Annual August Issue-Addenda 60 or cut of both high and low frequencies. A synthesized echo and a 4 Hz. tremolo can also be introduced by the performer, the ampli- AUDIO Reviews as well as volume control of fied sound. The AUDIO Music and Record Most fascinating effect, however, is the Review Section sub -octave or Octamatic feature. This 44 multivibrator circuit produces a tone one Record Review 44 Edward Tatnall Canby octave below the fundamental of any Light Listening 46 Chester Santon note played. Special circuits inhibit it Jazz and All That 48 Bertram Stanleigh from responding to other sounds, such as key noises and the like. Volume of the Octamatic output is independent of the fundamental, so that the player can AUDIO Profiles freely combine the basic sax sound with that of the amplified sub -octave. Model S-8800 Sherwood Stereo Receiver 40 The microphone is not located in the Stanton Stereo Cartridge 41 Model 581 EL bell of the Selmer Varitone as you might BSR Automatic Turntable 42 McDonald 500 expect, since this location is seriously af- fected by ambient acoustics. In addition, not all saxophone sound is radiated from the bell. Optimum location of the micro- AUDIO in General phone proved to be in the neck of the instrument, quite near the mouthpiece. Audioclinic 2 Joseph Giovanelli High sound pressures and high humidity Letters 6 dictated a specialized ceramic micro- Audio ETC 10 Edward Tatnall Canby phone in this application. Its location does not interfere with normal playing Editor's Review 16 or the acoustics of the instrument. Tape Guide 64 Herman Burstein It might be noted that sound level varia- New Products 70 tions inside the saxophone are remark- Audio Bookshelf 76 ably wide, due to standing waves gen- Industry Notes 77 erated while playing. Sound pressure Advertising Index 82 varies with pitch at most points in the air column, making precise microphone placement essential to the success of the AUDIO (title registered U. S. Pat. Off.) is published monthly by North Varitone. American Publishing Co., I. J. Borowsky, President; C. G. McProud The tone cabinet, solid state electronics, and Arthur Sitner, Vice Presidents. Executive and Editorial Offices, 134 North 13th St., Philadelphia, Pa. 19107. Subscription rates-U. S., and control system were developed by Possessions, Canada, and Mexico, $5.00 for one year; $9.00 for two Electro -Voice in conjunction with Sel- years; all other countries, $6.00 per year. Printed in U.S.A. at Blanchard mer. It is expected that this unusual ap- Press, Inc., Garden City, N. Y. All rights reserved. Entire contents copy- INSTITUTE OF righted 1966 by North American Publishing Co. Second Class postage proach to musical instrument design will HIGH FIDELITY paid at Philadelphia, Pa., and additional mailing offices. have a major impact on popular music INC. REGIONAL SALES OFFICES: Sanford L. Cahn, Art Sitner, Robert in the immediate future. Cooper 663 Fifth Ave., New York, N. Y. 10022: (212) 753-8824. Richard Reed, 205 W. Wacker Drive, Chicago, Ill. 60606: (312) 332-3910. Ohio 44125 (216) 621-4992. Leonard Gold, 1900 Euclid Ave., Cleveland, technical data on any E -V product, write: Jay Martin, 9350 Wilshire Blvd., Beverly Hills, Calif. (213) 273-1495. For ELECTRO -VOICE, INC., Dept. 1163A AUDIO, Editorial and Publishing Offices, 134 N. 13th St., Phila., Pa. 19107 602 Cecil St., Buchanan, Michigan 49107 Postmaster: Send Form 3579 to the above address. Circle 53 on Reader Service Card 1 www.americanradiohistory.comAmericanRadioHistory.Com AUDIO CLINIC Next Month Joseph Giovanelli Coming Organizing a "patch Panel" Articles Q. It is my desire to organize a only used for the experimental Annual Tape Recorder Issue con- "patch panel" circuit for my stereo nection of external speakers (tempor- 'The Early Flutter Spoils the system, which includes: arily). In any event, all speakers have 1. Marantz stereo control Recording' in which Lewis A. Center independent on and off switches. 2. Marantz dual power amplifier In Harlow gives us some hints on addition, I wish to connect the 3. Fisher 200 FM tuner output signal from the TV set (1 pro- how to maintain a recorder and 4. Fisher 1000 MX adapter pose to tap the output signal from what kind reels of to use for 5. Sony 7775 type recorder the terminals of the TV speaker, minimum flutter. 6. Revere Pro tape deck through an SPTS switch, thence to the 7. Eico HFT92 AM -FM tuner center 'The Hows and Whys of Tape channel of the main speaker 9. Rek-O-Kut L-34 turntable system, allowing Editing' by noted editing author- me, I believe, to 10. Empire turntable and tonearm choose whatever speaker I wish, with ity Joel Tall. 11. Bogen P-61 turntable both speakers being activated by the 'Get to Know the Decibel- 12. Shure cartridge TV amplifier.) Naturally, the main 13. Lafayette K-165 remote con- (Hi-Fi) speaker Better' in which George H. R. would be off on such trol stereo adapter occasions. O'Donnell simplifies the unnec- 14. The system also includes a TV Lastly, I have a transistorized mixer cessary calculations involving set. which I also propose to connect into the ubiquitous dB. It is my impression that in using the the same patch panel as the other appropriate plugs (pin/phone), sock- components. I cannot see any objec- ets (pin/phone), plus shielded cable, tion or conflict here. I can simply duplicate the outputs and I would appreciate your analysis of Profiles inputs on the rear apron of the the suggested arrangement, and any Marantz equipment by connecting the suggestions, changes, or recommenda- Altec A7-500, A7 -500W-1 Speak- aforementioned shielded cable and tions. er Systems plugs into the various inputs and out- Alfred N. Williams, St. Albans, N.Y. puts and bringing them out to the Sony Integrated Amplifier-TA A. What you propose is basically a face plate of the patch panel. In addi- good idea, especially when a large 1120 and Servomatic Turn- tion, if I repeat this process with the amount of equipment is involved as table with arm and cartridge. remaining components, again using is true in your installation. Your ap- the appropriate plugs and sockets, and proach is exactly what I took in my again bringing the connecting cables recording facilities.