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Cd-4 an Introduction Quadradisc Technics JVCI ItCil by Panasonic HANDBOOK! A discrete point of view/ about the quadraphonic evolution ® 6060B PnnlOCf in Japan It is a decision that should be made as quickly as possible for the benefit of PAGES 15- 16 It's time to producer, retailer and "I've already chosen." consumer alike. A decision I/I/here Some choice words from that will inevitably deter­ people who already know choose again. mine the future course of high fidelity sound it's at. To the audio industry's When it inevitably came reproduction. great credit, critical time to choose a single | PAGES 3 5 choices made during the industry method of That's basically why we've Just (or the record. astonishing evolution of producing a stereo disc, put this book together. high fidelity sound have the system chosen We'd like you, the concern­ A quick look at the disc from always been made using represented the greatest ed individual who'll be Thomas A. to present day uncompromised accuracy possibility for utmost directly affected by that of reproduction and accuracy and flexibility | PAGE 17 decision, to fully under­ | PAGES 6 9 greatest creative flexibility through two totally separ­ stand what we believe that The CD-4 roster. as the final standards of ate channels with the choice must be: the CD-4 The quadraphonic multiple The people who make the judgement. The first lowest crosstalk of Compatible Discrete choice game. equipment you'll use saleable home equipment, information between them. 4-channel disc system— The quad disc systems and for instance, was big and Once that decision was the "Quadradisc." Why? how they basically work bulky—a difficult marketing made, "stereo" soon Because Quadradisc is f 'PAGES 18-20 problem, to say (he least. became a household word the only genuine 4-channel The sound on CD-4. But that was the only way everywhere. disc system. Because no | PAGES 10 ^-11 Quadradisc artists the industry knew how to other system offers the provide uncompromised Will the real 4-channel and albums Now quadraphonic sound pure accuracy ol repro­ state-of-the-art accuracy disc please stand up? has truly come of age. duction and vast creative and greatest creative A closer look at the CD-4 Hardware production and flexibility of Quadradisc. f— PAGES 21 -22 flexibility-so big and sales are riding a con­ And it's just as simple as Quadradisc bulky it was. Coming to terms with sistently increasing sales that. quadraphonic. curve. Quadraphonic | PAGE 12 software releases and A glossary ot quadraphonic sales are paralleling that We invite you to step into Getting hooked on CD-4. terminology curve. New technological the world of the CD-4 What you need and how It's advances are occurring Quadradisc. Read about it, connected fmmm> PAGES 23 24 almost daily. learn about it. listen to it. Then critically compare it Q & A X4. to any of the other pro­ | PAGE 13 The time has come once Most commonly asked ques­ posed systems. more for the sound CD-4 is in the air. tions and answers about the industry to make another A bit about quadraphonic FM 4-channel situation evolutionary decision—to It history means anything what quadraphonic disc at all, Quadradisc will f PAGE 14 | PAGE 25 system should its combined become the key that opens technological and market­ up the next great dimen­ Suggested speaker More about CD-4. ing efforts be directed? sion in sound. placement for CD-4 Where to get the latest listening. information O 0 gear equal to the task. The pressed into each wall of its ol a musical dimension that Like any developing thing. "LP" ushered in the era of liny grooves, was a great only the alliance of artistry Edison's amazing little "high fidelity." new tool for creative tech­ and technology could have cylinder was destined lo go The 45 RPM single play nician and artist alike. Multi­ fostered Just for the through a lot of changes. "doughnut" made its channel recording techniques First it was flattened into a Not even the fertile and entrance in the early fifties, provided far greater accuracy Today, another dimensional disc made ot wax This visionary mind ot Thomas and hundreds of musical and depth in the final 2-chan­ word has burst into the world record. Alva Edison could have provided a much easier re­ performers rose to star­ nel master. New disc raw ol sound. 'Quadraphonic." cording medium to work with, imagined the full scope of dom or melted into ob­ materials and pressing tech­ 4-channel sound. Sound that and eliminated much of the what he'd started when he scurity on its revolutions. niques were developed that surrounds. Sound that lifts background noise inherent in first captured sound on a tiny But the next real milestone increased durability, expand­ the listener up and drops the cylinder. Wax soon gave tin foil cylinder. In less than in the art of sound re­ ed frequency response and him right in the middle of way to the durability ot a single cnnlury. that initial production was the crea­ assured the kind ol complete things Sound with a whole shellac, and the 78 RPM permanent record" of tion of a thing called channel separation neces­ new experience of involve­ record Grandma used to play sound reached the cars of stereo". Up until then, sary for each speaker to ment. Sound that many ex­ on her windup was born the world and changed the everything was recorded on reproduce a proper sound perts believe is a greater life style ot its people. It a single track and played field. FM stations rapidly advancement over stereo became the sound of an Then came microgroove Now back through a single adapted to stereo multiplex than stereo was over ever-expanding industry an entire symphony could be channel—just as though broadcasting—a system in monaural. from which millions make recorded on one disc with you had only one oar But which two separate chan­ their living. The sound of far bettor fidelity than ever with the development of nels are sent out on the But there was an intrinsic the rich gift ot music and before. Equipment manu­ multi-track tape equipment, carrier and sub-carrier of a problem with quadraphonic entertainment we find at facturers quickly created sound was no longer limit­ radio wave Equipment sound reproduction. With our fingertips today mechanical and electronic ed by the unavoidable manufacturers once again tape, everything was easy. flatness of monaural re­ rose to the occasion, and a Simply record four separate production The ability to whole range of home gear channels on the tape, and record and reproduce 2- designed to take full fidelity play It back through four channel source material advantage of the higher separate channels—Ihe raised the curtain on an quality source material soon discrete recording process immensely wider stago of appeared on the shelves of now being used on quadra­ musical realism and the local hi-fi store. phonic tapes and cartridges. creativity. After a few years of learning But what about the prime what this new tool could do. vehicle of sound for the Yet stereo sound didn't make the technician and the artist home listener—the record? its big impact until a stereo formed a creative alliance There were only two walls on disc system was standard­ that turned on the world to a the groove, and quadra­ ized. The "stereo LP", with two-earod era of electronic phonic sound demanded four a totally separate channel imagination. It was the birth channels of information. 0 O The lirsl and simplest solu­ full efforts behind the mas­ tion was to take tour chan­ sive research and develop­ nels ot recorded material, ment program it takes to meet that kind of challenge. The quadraphonic scramble it in a predictable pattern Into two channels, Using compatibility (ability to and approach to 4-channel then unscramble it Into four perform equally as well on sound reproduction. And stereo equipment with ihe multiple choiceeac h has certain advantages channels again with special electronic circuitry in the equivalent durability ol a Whatever initials you and disadvantages. playback equipment. This stereo record) and christen them with, there are But before any valid discreteness {the maximum game. basically only two quadra­ comparison can be made, a "matrix" method worked to a degree. The enhancement separation of Information on phonic disc systems on the firm understanding of the it provided to otherwise each of the four channels)as market—matrix and discrete. basic techniques of each straight stereo source their basic standards of Matrix systems may be SQ, system is an absolute must. material was clearly audible, performance evaluation, they QS, or in some other form. We offer the following and as a stereo enhancer, developed the revolutionary The only discrete system is : capsulized descriptions and matrix 4-channel reproduc­ CD-4 "Quadradisc " CD-4 CD-4. detailed illustrations towards tion should provide the home means Compatibility and Each has its own philosophy that end. listener with a lot of musical Discreteness on all 4 chan­ pleasure in the future. nels. The first and only The 4-2-4 Matrix system But even with the best quadraphonic system that Mixed sound after inter­ combines uncompromised electronic matrix unscram- change over each channel blers ever devised, some­ accuracy of reproduction and unlimited creative flexi­ Four channels ol discrete thing was always lost in the Information are mixed (encoded) 4-2-4 translation. The result bility on a disc.
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