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Electro-Voice New Syn-Aud-Con Sponsor newsletter Volume 13, Number 3 P.O. Box 669, San Juan Capistrano, CA 92693 Spring 1986 Ph: 714-728-0245 © Don & Carolyn Davis SYNERGETIC Working together; co-operating, co-operative SYNERGISM Co-operative action of discrete agencies such that the total effect is greater than the sum of the two effects taken independently. EXCHANGE OF IDEAS I met a man with a dollar I met a man with an idea We exchanged dollars We exchanged ideas I still had a dollar Now we each had two ideas Electro-Voice® - HP TransPlanar™ Series ELECTRO-VOICE NEW SYN-AUD-CON SPONSOR TABLE OF CONTENTS 2 ELECTRO-VOICE - NEW SYN-AUD-CON SPONSOR 10 SPEAKER REVIEW 3 CENTRAL CALIFORNIA ELECTRONICS 10 DO YOU KNOW THIS MAN? ANSWER 3 "IN HOUSE" SEMINARS 11 POLYNESIAN CULTURAL CENTER ( 3 NEW SHIPPING ADDRESS 11 SHOCK MOUNT DRIVERS IN THEIR ENCLOSURES 4 AUDIO IN THE PHILIPPINES 11 NEW EDITION OF THE YELLOW BOOK 4 "LIFE OF JOHN WILLIAM STRUTT" 12 HELLMUTH DOES IT AGAIN 4 "PHYSICS FOR THE INQUIRING MIND" 13 GENE PATRONIS TESTS WATERS 4 COMPANY BROCHURES 14 THE EFFECT OF N FACTOR 5 DO YOU KNOW THIS MAN? 16 JOB DESCRIPTION 5 MORE ON SONICS' TAC-86 17 THE 2ND GENERATION 5 NEW EUROPEAN REFERENCE 18 WOOFER PROGRESS 6 CONSTRUCTION DETAILS 19 FRACTIONAL OCTAVE DISPLAYS 6 THE BASIC BESSEL FUNCTION ARRAY 19 1933 DEFINITION OF GAIN OR LOSS 6 SIMPLE BUT IMPORTANT DEFINITIONS 19 MR. BABBAGE'S SECRET 7 DISTRIBUTED LOUDSPEAKER VARIATION 20 NEW TEF OWNERS 7 CLASS MONTAGE - ANAHEIM - JANUARY 1986 20 TECH RON LEASE/PURCHASE PLAN 8 CHECKING OUT A MIXER FOR OUTPUT LEVEL 20 FINDING THE EIN FOR A GIVEN LAIP OR THE 8 CONVERTING RASTI TO %AL cons LAIP FOR A GIVEN EIN SENSITIVITY 8 REFLECTIONS OFF THE CONSOLE 21 "THE FIRST SIXTY YEARS 9 "WHAT DO WE HEAR FROM KEN?" 21 RCW 320 LABORATORY SIGNAL PROCESSOR 9 ELECTRONIC CIRCUIT vs ACOUSTIC CIRCUIT 21 SPEAKER MOUNTING QUESTIONS 9 HINTS ON WRITING 22 BELL LABS ON THE VU 10 HME EXPERIENCES EXPLOSIVE GROWTH 23 WHAT LEVEL ARE YOU SENDING 10 CASE COVERS 23 CLASSIFIED TECH TOPICS: VOLUME 13, NUMBER 6 V.M.A. PEUTZ ON REVERBERATION VOLUME 13, NUMBER 7 A TRULY EFFECTIVE SPEECH PROCESSOR VOLUME 13, NUMBER 8 NEW TOOLS CHALLENGE OLD MODES OF THOUGHT VOLUME 13, NUMBER 9 BASIC LOUDSPEAKER MEASUREMENTS VOLUME 13, NUMBER 10 - LOUDSPEAKER ARRAY DESIGN ( ELECTRO-VOICE NEW SYN-AUD-CON SPONSOR Electro-Voice of Buchanan, Michigan, has become the latest Syn-Aud-COn Sponsor. Electro-Voice was incorpor­ ated on July 1, 1930. (Don was two years old.) Our first encounters with EV were during the years we worked for Paul KI ipsch and EV licensed many premium loudspeaker designs from Mr. Klipsch. During those years, we met Al Kahn and Lou Burroughs as well as many fine young engineers starting their careers at EV. Syn-Aud-COn's interest was renewed in EV with the tremendous step forward represented by the development of the constant directivity series of horns in the early 70's. We had a healthy skepticism of their claims for such high directivity factors Qs. Sam Bridges of Electronic Design heard me voice this skepticism and went to great effort in a large reverberant space to measure the Qs of the HR9040 and HR4020. We published the happy results in a Tech Topic, V3N5 1975, "High Q Measurements Confirmed in the Field." We were thrilled to find that they actually were true. b~ specification sheets becrune the standard by which all others are judged at this time. Over the years since their founding, EV has maintained an innovative presence in the P.A., broadcast, and conmercial sound fields. EV was one of the first manufacturers to build their own anechoic chamber, use STAFF Syn-Aud-Con NEHSLETTERS and Holography, and recently they purchased a TECH TOPICS are published TEF analyzer. Editors: quarterly by Synergetic Audio Concepts, P. 0_ Box Don & Carolyn Davis Syn--Aud-COn is pleased to welcome Electro­ 669 (Rancho Carrillo), Voice as a sponsor and to have the oppor­ San Juan Capistrano, C.l\ tunity to become better acquainted with Design & Production: 92693. the engineering talent behind their new wave of loudspeaker technology. Carolyn D&vis This is Volume 13, Number 3, Pat Carlson Spring 1986. Debbie Lohrman [E,') Eleclro:Voice~ Subscriptions are available for $32.00 per year. Single '® SOUND IN ACTION'" or back issues are available. Write for pri~e list. Alr Mail subscriptions outside the United States are $38.00. -2- SYN-AUO-CON NEWSLETTER SPRING 1986 CENTRAL CALIFORNIA ELECTRONICS central California Electronics in Fresno is the first to ask us to hold a special in-house seminar on one subject _. Sound Masking or Speech Privacy systems. It was a fun day. Rolly Brook of BBN Labs/Los Angeles joined us for the full day class - 7:30 A.M. to 9:30 P.M. It was a day of learning and doing. The session was held at the Marina Inn at Dana Point Marina and brought back fond memories of other classes held there over the years. Rolly shared with this group advanced copies of his chapter on open plan offices in the soon to be published Audio En~ineers Handbook. More im­ portant, he shared freely from his vast storehouse of experiences. Any building owner's dream should be to have this crew on his installation of a masking or privacy system in an open plan office. California Electronics is a motivated and informed organi­ zation. CENTRAL CALIFORNIA ELECTRONICS February 18, 1986 Joseph A. Bienkowski John M. Peters Jay Johnson Michael Pray Gene KI ine Jim Van Camp Jesse Mejorado Jim Walker "IN HOUSE" SEMINARS CMr special seminar for central California Electronics made us think about other special "in house" seminars. In addition to central California Electronics, we have had classes for: Pran, Inc., New Braunfels, Texas Disneyland, Anaheim Hollywood Sound, Hollywood Peirce Phelps, Philadelphia Cbmmunications COmpany, San Diego Disney World White House Corrmunications, IX~ Plantronics, Santa Cruz NBC, Burbank Griffiss Air Force Base, Rome, NY Crown International, Inc. Maryland Sound, Baltimore Opryland, Nashville We would like to do more "in house" seminars - by "in house" we don't necessarily mean in your facility. It may be held in a nearby hotel, but the material presented is structured for your group. If you are interested in exploring such a seminar, contact us. We plan a schedule several months in advance. We will be in the Middle West this Summer, in the East/Southeast in the Fall and in the West in the Winter. NEW SHIPPING ADDRESS EFFECTIVE IMMEDIATELY - Syn-Aud-Con's new shipping address is: Synergetic Audio Concepts 32141 Alipaz, Suite I San Juan Capistrano, CA 92675 OUY mailing address and telephone number remain the same. -3- VOLUME 13, NlH1BER 3 AUDIO IN THE PHILIPPINES "LIFE OF JOHN WILLIAM STRUTT" John Burgoyne, from Manila, has attended two Syn­ Aud--Con classes, the first in 1973. ( As is our custom when travelling, we explored some When we heard of the election turmoil in Manila, we of the book shops in the cities we visited on our wrote John to be sure that all was well with him recent Northwest tour. Portland produced two and received the following report. We though superb buys. readers of the Newsletter would be as interested as we were in John's letter. The first was "Life of John William Strutt, Third Baron Rayleigh, O.M., F.R.S." by his son Robert John Strutt, Fourth Baron Rayleigh, F.R.S. This is the 1968 edition with annotations by the author and a acouftlcf, lnc. foreword by John N. Howard. Published by the = University of Wisconsin Press, Madison, Milwaukee, London. ---------------- The Rayleigh book is a remarkable study of what 708 AURORA BOULEVARD TELEX: 22031 IMC PH QUEZON CIlY, PHILIPPINES CABLE: ACOUSTICS science is really about and how real scientists react to new as yet untried ideas. The man who discov-­ ered ARGON set the standard measurement of the Dear Friends: volt, ohm, and ampere that is still in use today, and was the author of the epic "Theory of Sound" could Thank you for your letter of the 18th of last month also investigate spiritualization with an open mind, expressing your kind concern and well wishes. We hoping that mind was indeed separate from matter. are happy to report that there is a bright side to all There is even an appendix of his favorite jokes that that has come to pass. he had kept a record of. Rayleigh's championship of the long buried paper by J. J. Waterston on the kin­ After the unique phenomenon of a "bloodless revo­ etic energy of colliding molecules anticipating by lution", the Filipino Nation has once more unshackled some 15 years the work of Joule, Clausius, and Max­ itself from the bonds of tyranny and regained its well, and which had been rejected by the Royal soc­ freedom and democracy. Henceforth, many a "never ieties referees, brings to mind today's great problem ending story" will be told regarding one's partici­ of peer review. A prime example is the rejection pation in what is now popularly known as People's of Heyser's first paper submitted to the AES Journal Power and an open acknowledgement of God's and its rescue by Olsen of RCA. guiding hand. Rayleigh's son once quoted Huxley to his father ( We at Acoustics played our small part having pro­ wherein Huxley had said, "Scientists over 60 are past vided the opposition groups with the sound systems their useful work." Rayleigh had replied, "Yes, if for their major conferences over the past two years.
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