HE AUTHORITATIVE MAGAZINE ABOUT HI KILL INTERFER WITH TWO ANTENNAS ToNEAR GEomETa AND CARTRIDGE SETUP DEMYSTIFIED THE IMPORTANCE OF EAG RAI'4G £04t6 210 1N1501 0A19 lYM1N37 8097 2i g:í Nf1FI---1 NOCI o IIFI099d9f_070T00 197.0 09t£090f1 1147425II II AND IT'S WHAT GOES INTO HPM SPEAKERS THAT MAKES THEM SOUND GREAT ON EVERY PART OF THE MUSIC. H PM 100 Most speaker companies try to impress with the same materials that were being you by describing the "wonderful" sound used in 1945. that comes out of their speakers. Every woofer in the HPM series, At Pioneer, we think the most believable however, is made with a special carbon fiber way to describe how good HPM speakers blend that's allowed us to decrease the are is to tell you what went into them. weight of the cone, yet increase the strength THE HPM SUPERTWEETER: needed for clarity. So you'll hear the deepest SPEAKER TECHNOLOGY RISES TO NEW HIGHS. notes exactly the way the musician recorded In many speakers, you'll them. find that the upper end of the And because every HPM audio spectrum is reproduced woofer also has an oversized by an ordinary tweeter. magnet and long throw voice In HPM speakers, you'll coil, they can handle more find that the high frequencies power without distorting. are reproduced by a unique OTHER FEATURES YOU supertweeter. RARELY HEAROF. It works by using a The High Polymer Máiecula- Super.wee'cr. Every HPM speaker has single piece of High So incredible, we named a whole line of speakers after it. cast aluminum frames, in- Polymer Molecular film, ( hence the name stead of the usual flimsy stamped out metal HPM) that converts electrical impulses into kind. So that even when you push our sound waves without a magnet, speakers to their limit, you only voice coil, cone, or dome. hear the music and never the And because the HPM frames. In fact, our competitors supertweeter doesn't need were so impressed, they any of these mechanical parts, started making what look like it can reproduce highs die cast frames, but aren't. with an accuracy and HPM speaker cabinets definition that surpasses are made of specially com- even the finest conventional pressed board that has better tweeter. acoustic properties than ordi- As an added advantage, nary wood. the HPM film is for You' `never hear a sound outof"these Their speakers have level curved die cast aluminum speaker maximum sound dispersion. crames. controls that let you adjust So unlike other speakers, you don't have to the sound of the music to your living room. plant yourself in front of an HPM speaker to And these features are not just found in enjoy all the sound it can produce. our most expensive HPM speaker, MID -RANGE THAT ISN'T but in every speaker in the MUDDLED. HPM series. For years, speaker man- All of which begins to ex- ufacturers have labored over plain why, unlike speakers mid -range driver cones that that sound great on only part are light enough to give you Level controls that let you adjust of the music, HPM speakers quick response, yet rigid enough to your listening area. sound great on all of it. not to distort. At this point, we suggest you take your Pioneer solved this problem by creating favorite record into any Pioneer Dealer and special cones that handle more power, and audition a pair of HPM speakers in person. combine lower mass with greater rigidity. So If you think what went into them our HPM drivers provide you with cleaner, sounds impressive, wait till you hear what and crisper mid -range. Which means you'll comes out of them. hear music, and not distortion. (4D PIONEER' WOOFERS THAT TOP EVERY OTHER BOTTOM. We bring it back alive. Conventional woofers are still made V ,ai.n-h:r N WHAT dOMES OUT FASPEAKERIS ONLY AS IMPRESSIVE AS WHAT GOES INTO IT. Enter No. 33 on Reader Service Card Vol. 64, No. 1 DISCWASHER January 1980 presents The Clean Truth About Your Naked Stylus "Successor to RAW , Est. 1917" When your stylus plays over one Feature Articles light fingerprint or one tiny "bead" of vinyl stabilizer, the clean naked dia- Annual Equipment Directory & mond becomes a glazed, dust -holding Car Stereo Addenda 32 abrasive weapon wearing away at your Directory "Just Call Me Maestro" 48 Bert Whyte records and masking their true sound. m++ The Importance of This unseen build-up may actually hold Dynamic Range 52 Jerome E. Ruzicka the tracking tip of the diamond out of Kill FM Interference with the record groove. Two Antennas 68 Richard Modafferi Tonearm Geometry and Setup Demystified 76 Martin D. Kessler and Accumulated grit B. V. Pisha on stylus that looks "clean" to the naked eye. Equipment Profiles The SC -1 Stylus Cleaner from Mitsubishi Micros Discwasher is designed with a brush M -F01 Tuner, M -P01 Preamp, that is stiff enough to remove harmful and M -A01 Amplifier 90 Leonard Feldman accumulation, but gentle enough to Pioneer PL -630 Turntable 98 George W. Tillett avoid damaging delicate cartridge as- DB Systems DB -6 Basic Amplifier 102 Leonard Feldman semblies. Two drops of Discwasher's Sherwood S-32CP FM/AM Tuner 106 Leonard Feldman D3 Fluid add extra cleaning action to the SC -1 without the side -effects of Record Reviews alcohol, which can harden rubber canti- lever mountings. The Column 110 Michael Tearson & Jon Tiven Jazz & Blues 114 John Diliberto & After cleaning with SC -1 and D3 John Lissner Fluid by Classical Reviews 116 Edward Tatnall Canby Discwasher. The Folk Bag 118 Tom Bingham The retractable, walnut -handled Audio in General SC -1 includes a magnifying mirror for convenient inspection of stylus/car- Tape Guide 6 Herman Burstein tridge alignment and wiring. Video Scenes 8 Bert Whyte Get the clean truth from your Audio ETC 16 Edward Tatnall Canby records; get the SC -1. Behind The Scenes 22 Bert Whyte Audioclinic 26 Joseph Giovanelli What's New in Audio 28 SC -1 STYLUS Dear Editor/Errata 30 Classified Advertising 120 CLEANER Advertising Index 130 About the Cover. These days, tuner circuit design is a high art, which pushes the limits of the medium, as is symbolized by our impressionist cover photo by Photographic Illustrations, Phila- delphia; model, Sue Greco. ddiscwasher® inc. IMF 1407 N. Providence Rd. Audio Publishing, Editorial, Subscription, and Advertising Production offices, North American Columbia, MO 65201 Building, 401 No. Broad St., Philadelphia, Penna. 19108. Telephone: 215/574-9600. Postmaster: Send Form 3579 to above address. A Great New Sound From Stanton - The Choice of The Professionals Now the great performance enjoyed by recording professionals worldwide in the Stanton 881S cartridge is also available in a brand new, lightweight headphone...the Stanton Dynaphase 55. Professional quality sound is the result of superior Stanton driver design that includes 11/2" dynamic high velocity elements with a specially formulated synthetic film diaphragm and samarium cobalt magnets...allowing for low distortion and exceptionally wide frequency bandwidth. The tuning of the air cavity behind the diaphragm is a unique design of Dynaphase 55. It keeps the air in phase delivering flattest response and finest acoustical behavior of the driving element. Includes adapter plug. Suggested retail *$60 Pictured to the right, is the Stanton Dynaphase 35, a headphone offering top performance at its price. With an adapter plug. *$45 The top -of -the -line Stereo Wafer Model XXI is as fine as they come and featherlight for comfort. *$70 For further information, contact Stanton Magnetics, 200 Terminal STNTOfl Drive, Plainview, N.Y. 11803. THE CHOICE OF 1HE PROFESSIONAL`, ' (t 1979 STANTON MAGNETICS Enter No. 46 on Reader Service Card At moving coil Audio last a Editor Eugene Pitts Ill cartridge you can Assistant Editor Kay Blumenthal Design Frank Moore recommend to Design Assistants Barbara D'Aprile, Mark Collins Production Manager your best Margaret Zibelman Associate Editors: Edward Tatnall Canby, Bert Whyte friend! Senior Editors: Richard C. Heyser, B. V. Pisha Howard A. Roberson Contributing Editors/Artists: New AT3OE Tom Bingham, Herman Burstein, Ted Costa, John Diliberto, Stereo Phono Cartridge Leonard Feldman, Joseph Giovanelli, with Vector-AlignedTM Edward M. Long, C. G. McProud, Gary Roseman, Jon Sank, Dual Moving MicroCoilsTM Donald Spoto, Gary Stock, and user -replaceable Stylus Michael Tearson, George W. Tillett, Jon Tiven The subtle, yet unique characteristics of mov- throughout the audio range. Compliance is Vice President/Publisher ing coil cartridges have had their admirers for individually controlled during manufacture years. A top-quality moving coil cartridge ex- of each assembly to optimize performance. Jay L. Butler with most other hibits remarkable sonic clarity and trans- This extra step, impossible M 4y., parency. This performance can be attributed designs, coupled with our unique radial to the very low mass, and low inductance of damping ring, insures excellent tracking of gzMF..-i AUDIO is published monthly by 43 F W"s North American Publishing modulation found in many of a' Company, the tiny coils used to sense the stylus motion. the high-energy 4Z,Zeler Irvin I. Borowsky, Founder and President But until now, moving coil cartridge popu- the top-quality recordings now available. Frank L. Nemeyer, Vice President/General Manager larity has been limited by three major prob - Each coil is located in the ideal geometric Jerome W. Lerman, Vice President/Finance almost inherent to moving relationship to reproduce "its" side of the Joseph Florentine, Chief Financial Officer 4 lems which seemed R. Kenneth Baxter, Vice President/Manufacturing coil designs. record groove. This Vector -Aligned*" design Vijay Chowdhry, Production Director 1) It seemed impossible to make a user - assures excellent stereo separation, minimum Jack Maxson, Promotion Director replaceable stylus assembly without com- moving mass, and the highest possible effi- Betty Brodsky, Subscription Promotion Director which is S.