Progress Report on Quadrasonics

PROGRESS REPORT ON QUADRASONICS o E 9,4iiVI vs/ -"V (7z -on n g n v, 3AId0 Warttlii-V-60.2. ELA 47 IdV ?JVW H.LIWS NN319 Lw00vl00s00Ir69Lzol93t0 ZO 800V6OZ 9HIS 0E89E147 Big, acoustic -suspension sion, Fisher tweeters incorporate a soft CDThe Fisher XP -60C, the world's woofers. dome diaphragm. Their impregnated finest $99.95 speaker system. All Fisher speaker cotton or formed-mylar construction If you want outstanding power - systems use a larger - eliminates parasitic high -frequency re- handling capacity and good bass, and than -you'd -expect sonances and the resultant coloration you won't pay more than $100 for them, acoustic -suspension of sound. this is the only speaker for you. It uses woofer. An exclusive a massive 10 -inch woofer with a free -air free -piston design, Even the crossover networks resonance of 22 Hz. In its airtight enclo- coupled with an ex- and enclosures are special. sure, fundamental bass response tremely compliant extends down to 35 Hz. A 21/2 -inch butyl rubber or butyl - extended - bandwidth tweeter provides impregnated sur- pure treble tones to 20,000 without col- round and a specially oration or break-up. (Price includes lat- treated cone, allows a fundamental bass ticework grille.) response down to 30 Hz without doubl- ing or distortion. ®The Fisher XP -65-K, the world's As an additional measure of their finest $109.95 speaker system. quality, the free -air resonance of Fisher A 3 -way system with a lot of ad- woofers ranges from 38 to a remarkable In a Fisher speaker system nothing vantages. Bass response starts at 33 Hz, 10 Hz. made possible by a 10 -inch woofer with The voice coil is specially de- is taken for granted. We know that un- less each speaker does exactly the job a free -air resonance of only 20 Hz. The signed to handle plenty of power. Loud - midrange is handled by a 5 -inch driver, music lovers appreciate that feature. it was designed to do, no more, no less, the overall sound will suffer somewhat. responsible only for those frequencies So we've designed band-pass filters between 600 and 3,000 Hz. At 3,000 Hz, Our mid -range is better a 3 -inch tweeter with a 9/16" voice coil -- which, when used in place of conven- by definition. tional roll -off networks, assure that each smoothly takes over, reproducing the Virtually all the defini- speaker will handle only the frequen- audio frequencies out to 20,000 Hz. tion or 'presence' of cies within its optimum range. Further- (Price includes fretwork grille.) musical instruments occurs in the middle fre- more, special quality capacitive and inductive elements are used to achieve OThe Fisher XP -66C, the world's quencies. Fisher lowest losses and smooth transition at finest $129.95 speaker system. speakers have better each of the crossover points. The sha-p- There are quite a few speaker definition because, cutoff 6 to 12 dB per octave networks systems at this price, but this Fisher very simply, we use the XP -66C challenges them all. This 3 -way best mid -range speakers. prevent interactions at the crossover points. system uses a big 12 -inch free -piston In addition to utilizing spe- All the time and effort we take get- woofer with a free -air resonance of 20 cially developed magnets Hz. Midrange frequencies are handled (see further below), all of our ting the internal components of our speaker systems just right would be by a 53/4 -inch driver made of a new mid -range a butyl - resonance impregnated half -roll surround for extra - fruitless if we put it all into an ordinary speaker cabinet. cone tweeter is used for extremely high compliance (and therefore extreme wide -dispersion and smooth upper clarity and smoothness of reproduction). That's why we've designed a better cabinet. It'sconstructed entirely of treble. The XP -66C offers lifelike repro- To prevent interaction with the duction of the most complex musical woofer, each mid -range driver is sealed non -resonant compressed flake board rather than vibrant plywood, to eliminate passages at an ordinary bookshelf off from the rest of the system in an air- price. (Price includes latticework grille.) tight enclosure. This, naturally, costs the boxy speaker sound so common in even the most expensive plywood-cab- more to do. But we've found that it's The Fisher XP -7C, the world's essential to the characteristic natural ineted speaker systems. Our speaker systems are tightly sealed and com- 0finest $169.95 speaker system. sound Fisher speakers are identified The reason that the XP -7B sounds with. pletely filled with AcoustiGlass to provide a high degree of damping. so smooth is that it's a 4 -way system. There's a massive 12 -inch acoustic Now, about transient response. These design innovations and this - preoccupation with quality holds true for suspension woofer, and not one, but There are many people who be- two 53/4 -inch drivers, each assigned a lieve that the ability of a cone to respond the least expensive as well as the most expensive Fisher speaker system. different section of the midrange. And quickly-or transient response-is the there's a pair of 3 -inch wide -dispersion single most important determinant of a The Fisher XP -55B, the world's cone tweeters.(Price includes latticework speaker's sound. That's why we're grille.) pleased to tell you that by using newly 0finest $49.95 speaker system. developed super Alnico magnets with This low-cost speaker system high flux density, Fisher woofers and does everything you'd expect a high - The Fisher XP -9C, the world's mid -range speakers achieve faster, more cost speaker system to do. It provides 0finest bookshelf speaker positive control of their cones than any bass down to 37 Hz by utilizing an 8 - system. other speakers being manufactured to- inch woofer with a long -throw voice The Fisher XP -9C, at $219.95, is a day. Fisher transient response is abso- coil. It delivers smooth treble, with true 4 -way speaker system, as the lutely unsurpassed in the industry. wide-angle dispersion up to 20,000 Hz. world's finest bookshelf system posi- Crossover occurs decisively at 1,500 tively must be. (Crossover takes place The reasoning behind our Hz. (Available with fretwork grille, at at 500, 1,200 and 5,000 Hz.) The woofer tweeters is also clear. slight additional cost.) is huge: 15 inches in diameter, with a Specially designed, The Fisher XP -56, the world's 12 -lb. magnet. There's a pair of matched sealed -back tweet- 5 -inch midrange drivers. A hemispher- 0finest $79.95 speaker system. ical dome tweeter delivers the lower ers provide excellent A full -range speaker with charac- frequency response teristically Fisher sound, in a beautiful treble frequencies. A dome super- to beyond the limits tweeter finishes the job smoothly, to the walnut cabinet. It has an 8 -inch woofer limits of audibility. of human hearing. By with a long -throw voice coil that delivers using a low -mass clean bass down to 35 Hz. Its 3 -inch voice coil, highs are tweeter is responsible for the clean up- natural sounding as per midrange and treble all the way out well as unusually to 20,000 Hz. (Available with fretwork Fisher clear and transparent. For wide disper- grille, at slight additional cost.) We invented high fidelity. The number of different loud- speaker designs offered to the prospec- tive buyer today is nothing short of staggering. There are almost as many engineering approaches as there are manufacturers, and each particular design philosophy is affirmed to be the one true faith. Even the sophisticated audiophile who knows his amplifiers and cartridges stands bewildered amidst the permu- Modelfor model,tations and combinations of driver designs, speaker configurations, cross- overs and enclosure types. dollar for dollar, Fisher Our advice is: stop, don't panic, listen. Because the only justification for a new and different engineering feature speaker systems have is the sound. Fisher takes a completely prag- matic approach to speaker design. We awider frequencysay yes to anything that makes a speaker sound better. We say no to anything that only makes a speaker read better. As a result, when you buy a range,lower distortion,Fisher speaker, you're buying sound, not some intangible hi-fi mystique. Let's face what the politicians cleaner transients,would call the gut issue here. When a man puts down, say, $169.95 for a speaker system, the nagging question on his mind is: "Am Igetting the very better dispersion and best sound this kind of money can buy?" Fisher can confidently answer less overall coloration "Yes!" to that question, no matter which particular Fisher speaker is the case in point. We know all the alternatives in thananyother brand,each price category and have evaluated them in our laboratories. We are putting cur reputation as the world's largest regardless of component manufacturer on the line with each speaker model we offer.If there were a better way of making any one of them, that's tne way we would design features or make it. Now let's examine some of the engineering features that are meaning- engineering claims.ful in terms of actual sound and relate them to the specific performance char- acteristics of Fisher speaker systems. If you want something done right, you do it yourself. The Fisher philosophy of speaker production is to let one engineering team retain full control of the speaker design, from concept to shipping car- ton.

Load more