VOLUME 3 - NUMBER 3 MAY /JUNE 1972 $1.00 RECORDING engineer /producer relating recording science to recording art to recording equipment RECORDING SONNY & CHER AT LAR RABEE SOUND www.americanradiohistory.com 16 & 24 MULTI CHANNEL DOLBY CARD ASSEMBLIES.... NEED IT? CALL - 216:655 -2400 DANIEL N. FLICKINGER & ASSOCIATES, INC. 40 SOUTH OVIATT STREET HUDSON, OHIO 44236 (216) 655 -2400 www.americanradiohistory.com VOLUME 3 - NUMBER 3 MAY /JUNE 1972 RECORDING engineer /producer -the magazine to exclusively serve the recording studio market ... all those whose work involves the re- cording of commercially market- able sound. 'SIMULTANEOUS OVERDUBBING' RECORDING SONNY & CHER -the magazine produced to relate .. RECORDING ART to RE- AT LARRABEE SOUND 11 Barry Rudolf CORDING SCIENCE ... to RECORDING EQUIPMENT. WHAT HAPPENS WHEN YOU CERAMIC TILE AN ECHO CHAMBER 17 Don Foster Editor /Publisher MARTIN GALLAY Engineering Editors RON MALO NEED 24 TRACKS - 32 TRACKS -00? WILLIAM ROBINSON TRY USING TWO TAPE CHUCK DAVIS Business/ Circulation MACHINES IN SYNC 23 Guy Costa Manager V. L. GAFFNEY Art Director GERRY SADOWSKI A $5.00 LINE AMP 29 Chuck Davis RECORDING engineer /producer is published bi- monthly and is sent free to qualified recipients in the United Letters & Late News 8 States. Subscriptions tor other than qualified individuals or companies New Products 31 may be purchased at $5.00 per year. Classified 36 (All foreign subscriptions: $6.00 per year.) Material appearing in Re /p Cartoon 39 may not be reproduced without writ- ten permission of the Publisher. RECORDING engineer,'producer is not responsible for any claim made by any person based upon the publica- tion by RECORDING engineer /pro- ducer of material submitted for pub- lication. Controlled circulation postage paid CREDITS - cartoon: WAYNE YENTIS at Los Angeles, California. RECORDING engineer /producer 6430 Sunset Boulevard P.O. Box 2287 Hollywood, CA 90028 (213) 461 -7907 --- Circle No. 101 www.americanradiohistory.com Maximum 112 db SPL @ 4 ft., equalized for acoustical output: flat response ( pink noise) , 40 to 15,000 Hz, in a free field. Dispersion: 40° vertical x 90° horizontal. Biamnplifier: Altec Model 771 B. Input sensitivity: .5 VRMS -60 Kohm unbalanced input for full output. .1 VRMS -600 ohm balanced input for full output. Crossover: 500 Hz, 12 db /octave. Noise (both sections): 80 db below rated output. LF section: 60 watts, continuous sine wave power, 0.3% THD. HF section: 30 watts, continuous sine wave power, 0.3% THD. Dimensions: 26.5" wide, 31" high, 23.5" deep. Weight: 112 lbs. Finish: Grey epoxy with black grille fabric. The NewAltec 9846 Biamplified Studio Monitor Speaker System Re p6 www.americanradiohistory.com If stereo disk cutters go down to 30 Hz, shouldn't the monitors? Yes. Because the music goes down that far. You should hear everything when Above 500 Hz things are different too. To make the system work, power has you're laying down tracks or you There's far more smoothness than in to be delivered. Biamping is the only might not really know what you've previous designs. Notice the proximity solution. So we built a biamp right got. Why wait till you play a test cut of the woofer and the HF horn. into the enclosure. It provides more to find out what's at the low end? You They're within inches of each other. than enough power to make the com- don't have to with our new monitors. This creates a smooth transition from ponents produce more than enough What have we done differently to get one source to the other as you go up sound. Depending on the music, the that low end? First of all we're using the spectrum. 90 watts of available power may be sealed boxes. No more ports or bass Have you ever wondered why good equivalent to three or four times that reflex cabinets. We've gone to a very monitor systems are two -way systems? amount when compared to single high -compliance speaker with a big It's because they guarantee transient amplifier systems. magnet structure. It's well damped so accuracy. They don't have the inevi- This is truly a new recording tool. that it responds accurately to signals table problem of source displacement Write for further information on the down to 30 Hz. There's very little that occurs in systems with separate 9846 Monitor Speaker system. distortion. You can't get this with tweeters. And they don't burn out, as Altec, Professional Studio Products, ported boxes. tweeters in most 3 -way systems are 1515 South Manchester Avenue, prone to do, with the super highs Anaheim, California 92803. present in much of today's music. Few drivers are capable of such a wide frequency range. Because so few PROFESSIONAL STUDIO PRODUCTS speaker builders use the kind of phas- ALTEGO Circle No. 102 ing plug which makes this possible. Re p 7 www.americanradiohistory.com LETTERS and LATE NEWS FROM: BILL LAZARUS PARAMOUNT RECORDING HOLLYWOOD, CALIFORNIA don't While I have recorded a great many things for James Taylor, and producer Peter Asher, I hasten to advise that his single "You've Got A Friend" was not one of those I recorded, for which R -e /p gave delay 2... me undo credit in "RECOGNITION 1971" appearing in your March /April issue. without a Cooper g'ime Cube * FROM: PETER ASHER The only dual delay device available PRODUCER, LOS ANGELES There is an error in your "Recognition UREI's unique Cooper Time Cube* gives you TWO completely 1971" awards in your most recent issue. independent audio delay lines, at less than one-third the cost of The single You've Got A Friend by James a single channel digital unit. Taylor was engineered by Richard Sanford Orshoff at Crystal Studios, and not by Cost per MS less than 1/3 that of a digital device Bill Lazarus at Sunset Sound. Lowest distortion, even at low levels (less than .5 %) I have great respect and affection for Excellent signal .'se - better than 70db Bill who is an excellent engineer and I IN Excellent fre. + n ', ponse, bandwidth 30 Hz to 10 KHz have used him in the past, but I recorded the whole of the Mud Slide Slim album at The Model 92f -1dß em provideiTWO electronically inde- Crystal with Richard whom I consider pendent- clays: One of 16MS and one of 14MS. They can be one of the finest engineers in town. used separately, in Quad synthesis or for simultaneous "loud- ness enhancement" of two single channels. Or, the two delay AUDIO TECHNIQUES, INC. BOWS AS lines may be cascaded for 30MS delay to an "echo chamber" NEW COMPANY TO SERVE PROFES- or reverberation device. SIONAL AUDIO PRODUCTS USERS IN Model 920 -16 Time Cube is the only acoustical delay line system of professional quality, and is designed specifically for record- THE NORTHEAST. ing studio applications and optical film recording. Announced by President Hamilton H. Brosious, and Vice President Robert See your dealer or write for complete specifications. Berliner, both well known and long -time former Scully Recording Instrument Com- 'Evolved from the rig al design of Dr. Duane H. Cooper of The University of Illinois, pany executives, Audio Techniques will in collaboration h T. Putnam of UREI. be located at 121 Hamilton Ave., Stam- ford, Connecticut, to serve the 12 north- eastern states. Distribution franchises have been secured for the entire line of MCI multi channel tape recorders, DOLBY noise reduction systems, STANDARD TAPE LABS test tapes, TABER bulk tape de- gaussers, and VIDEO TECHNIQUES closed circuit television products. From the READERS An editorial material rating of the most useful feature article, as gathered from the Reader Service Cards received prior to press time. MARCH /APRIL ISSUE: RICK HALL 36 9% RECORDING IN 1915. 13.8% a mr_Tr company QUAD AUDIO FOR TOMMY 47.2% 11922 Valerio Street, No. Hollywood, California 91605 (213) 764 -1500 Re P 8 Circle No. 103 www.americanradiohistory.com Audio Techniques will import and Regional Manager and National Sales ROBINS INDUSTRIES (FAIRCHILD feature popular European audio equip- Manager in professional audio and video SOUND EQUIPMENT) ACQUIRES ment to be sold throughout the U.S. and tape equipment sales. While at Ampex he PLANT IN COMMACK, ON L.I. Canada through professional distributors. also developed instrumentation and video Robins Industries Corp., manufacturer The first such imported products is the training courses for the United States of consumer electronics and data proces- LEVELL line of transistorized portable Government. sing accessories as well as professional test equipment. sound equipment, has acquired the 50,000 Audio Techniques will be a sister com- square foot plant at 75 Austin Blvd., pany to Video Techniques, Inc. a well Commack, Long Island, N.Y., in the known northeastern CCTV systems com- PLAN NOW ... Commack Industrial Park in early- Ameri- pany also located at the Hamilton Avenue can style. address. Together the two firms will offer ATTEND THE 43rd Herman D. Post, president, said the the most complete Audio /Video engineer- AES CONVENTION company would relocate and consolidate ing systems, sales and service capability in many of its activities there starting in the northeast. WALDORF ASTORIA June. Robins and its subsidiaries, includ- ing Fairchild Sound Equipment Corpora- DICTAPHONE NAMES DONALD F. NEW YORK CITY tion, have been headquartered in College SMITH RECORDING MANAGER. Point, N.Y., in the Flushing area of Dictaphone SEPT. 12 -15, 1972 Corporation has announced Queens, for many years. the appointment of Donald F. Smith as The new building is situated on a three - Director of Marketing of the Recording acre site visible from the Long Island Automation Group. This group comprises B.