NEW PRODUCTS: Roundup of latest audio equipment
and accessories.
Robins' Eight -track Tape Cleaner
The Robins "Soundtrack Scrubber" contains a mildly abrasive polyester belt designed to clean the tape within an eight -track cartridge. In operation, the device's specially shaped end is inserted into the loading slot of an eight -track record/player, and the tape cartridge to be cleaned is in turn inserted into the Scrubber's other end. A linkage within the Scrubber drives the cartridge from the ma chine's capstan, and the tape is pressed against the polyester belt and cleaned as it cycles through the cartridge. The Soundtrack Scrubber's cleaning belt is sufficiently long to clean about two hundred cartridges. After each cartridge, the belt is advanced a little to bring an unsoiled spot into contact with the tape. A refill spool of cleaning belt is supplied with the device. The Soundtrack Scrubber, Robins catalog No. 30-001, costs $11.99.
McKay Dymek Broadband Antenna
The DA 100 is a preamplified antenna covering the radio spectrum from 50 kHz to 30 MHz, including the AM band. It consists of a collapsible 4-foot whip antenna mounted on a small weatherproof box and a separate a.c. powered electronics module. The antenna it self is to be installed in some (preferably) high place outside. The electronics unit is located indoors. The performance of the DA 100 is said to equal or exceed that of the usual long-wire antenna typical in such applications. It is an omnidirectional device having an output impedance of 50 ohms. The electronics module measures 9 x 5 x 9. Price: $125 by direct order from the factory only.
Jensen Speaker For Budget Systems
At about $60, Jensen's Model 20 is intend ed for audio installations of modest cost or as remote speakers. The 8 -ohm system has an 8 -inch air -suspension woofer and a 2 -inch cone tweeter to provide a stated frequency range of 35 to 20,000 Hz. The manufacturer advises that at least 10 watts of amplifier power per channel is required to drive the system. The maximum power rating is 40 watts. The Mod el 20 has dimensions of 1814 x 11 x 81/2 inches and weighs 18 pounds. Finish is walnut -grain vinyl with a sculpted grille.
Technics Turntable Has Professional Features
The Technics "Professional" series of products has been augmented by the SP 10MkII, successor to the SP -10 direct-drive turntable. The new turntable, intended for the broadcast industry as well as the audiophile market, has a start-up time of one -quarter second at 33 1/3 rpm, permitting reliable cueing from standstill. A combination of mechanical and electronic braking systems stops the platter in 0.3 second and prevents it from rotating while stopped.
The three -speed (33 1/3, 45, and 78 rpm) SP 10MkII has a direct-drive motor with speed referenced to a quartz -crystal oscillator and servo -controlled by a phase -locked loop. Speed drift is a maximum of ±0.002 percent under any likely load or drag conditions.
Weighted rms wow and flutter are 0.025 per cent, and rumble is -50 dB by the DIN A standard, -70 dB by DIN B. The full-size platter weighs about 6 1/2 pounds. The electronics for the turntable are contained in a separate power unit, and the main controls (solenoid assisted) are duplicated in a remote-control box supplied. The turntable's dimensions are about 141/2 x 14 1/2 x 4 inches. Approximate price: $700.
Mid-price Receiver From Pioneer
The Model SX-750 occupies approximately the middle ground in Pioneer's new line of AM/FM stereo receivers. Maximum rated output into 8 ohms is 50 watts per channel, 20 to 20,000 Hz, with no more than 0.1 percent harmonic or intermodulation distortion.
Noise is -70 dB for the phono inputs and -90 dB for high-level inputs. The FM section's us able sensitivity is 10.7 dBf (1.9 microvolts); 50 -dB quieting sensitivity is 17.2 dBf (4 microvolts). Other FM specifications include: capture ratio, 1 dB; AM suppression, 55 dB; alternate -channel selectivity, 80 dB; spurious -response rejection, 90 dB. FM frequency response is 30 to 15,000 Hz +0.2, -2 dB, and stereo separation is 30 dB throughout that range.
The SX-750 is distinguished by the silver and white styling of the latest Pioneer receivers. The basic controls-volume, balance,, bass, and treble-are augmented by lever switches for tone -control defeat, high -cut filter, loudness compensation, mode, and tape monitoring and dubbing. There is a stereo-headphone jack and a front-panel microphone input. Most of the input and output connectors are mounted on a horizontal shelf in the rear of the receiver. A walnut-grain vinyl top and walnut -veneer side panels decorate the SX-750, which has approximate dimensions of 19 x 6 x 14 2/3 inches. Approximate price: $400.
Sound Guard
Ball Corporation's "Sound Guard" is a dry lubricant, in liquid spray form, intended to be applied to records and then spread around with a buffing pad to leave a film about five millionths of an inch thick. The film is said to reduce stylus friction-and hence record wear-and to lessen the anti -skating requirements of record players. It is also said to subdue certain types of surface noise. The trade name for the lubricant is "Vac Kote," a substance developed by the Ball Corporation for use on space vehicles. Reportedly, it adheres to the vinylite material of records but not to itself, so that build-up of the substance in record grooves is avoided. One application will last for a number of playings, according to the manufacturer. Sound Guard fluid sufficient for treating about twenty records comes packaged with a pump-spray applicator and a buffing pad. Price: $7.
Threshold Class-A Power Amplifier
A dynamic biasing circuit enables the new Threshold 800A stereo power amplifier to per form as a Class -A device without entailing the high heat and power dissipation usual with Class -A designs. The circuit is a high-speed configuration that is able to follow rapid variations in the input signal and alter the bias accordingly to keep the output transistors in the most linear portion of their transfer characteristic. Under low -signal conditions the bias is reduced enough to limit quiescent current (and hence idling power consumption) to comparatively reasonable amounts. Though thermal requirements are therefore less than they would be for a comparable amplifier without dynamic bias, they are still substantial. The 800A has twenty-four output transistors per channel, and it is cooled by a two-speed fan. The amplifier incorporates a number of protective devices, including comparator circuits that switch the amplifier off when the output waveform deviates too much from that of the input.
Rated power output is 200 watts per channel (8 ohms) from 20 to 20,000 Hz with a maximum of 0.1 percent harmonic and inter-modulation distortion, decreasing at lower power levels. Power consumption at idle is approximately 300 watts. Front-panel facilities include large meters that read average output levels, gain controls, an indicator light to show the status of the thermal circuit breakers, and a "Saturation Control" that sets the threshold of a passive limiter. The limiter is designed to prevent "hard" clipping by rounding the waveform peaks and thus inhibiting the production of high -order distortion products. The amplifier measures approximately 19 x 8 3/4 x 18 1/4 inches overall and weighs about 90 pounds. Price $2,165.
Moving-coil Cartridge with Replaceable Stylus
Superex will be U.S. distributor for the Satin moving -coil cartridges, a line consisting of three models, all of which have user-replaceable styli. The stylus assembly itself consists of the diamond tip, the cantilever, and the pivot/suspension. It is attached to the main body of the cartridge by a magnetic clasp, and the cantilever engages a small met al yoke to which the coils are joined.
The Satin M-117 has a 0.5 -mil conical (spherical) stylus; the M -177E is fitted with a 0.2 x 0.8 -mil elliptical stylus, and the M -177X has a 0.1 x 2.5 -mil Shibata stylus. Frequency response extends from 10 to 25,000 Hz for the M-177, to 40,000 Hz for the M -177E, and to 45,000 Hz for the M -177X. Said to be able to drive most magnetic-phono inputs directly (without the transformer or pre -preamplifier usually required for moving -coil cartridges), the three pickups have outputs between 3 and 3.5 millivolts for a recorded velocity of 5 centimeters per second. For the E and X models, tracking -force range is 0.5 to 1.5 grams; the spherical model's range is 0.75 to 2 grams. All three cartridges weigh 9 grams. Prices: M-177, $140; M -177E, $170; M -117X, $190. Replacement styli are, respectively, $60, $90, and $120. Superex also offers a resistive net work ($30) made by Satin that goes between cartridge and preamplifier, and which is said to provide optimum cartridge damping.
Marjen Speaker System
A relatively new company, Marjen, has brought out a line of three speaker systems, all employing 8-inch woofers and 2-inch cone tweeters in various configurations. A representative system, the Model I, has a single woofer and two such tweeters for a rated frequency response of 44 to 20,000 Hz ±3 dB. The crossover frequency is 2,000 Hz. Recommended amplifier power into the system's nominal 8 -ohm impedance is 10 watts mini mum and 75 watts maximum.
High -frequency output is adjustable on the Model I by means of pushbuttons that provide a ±3 -dB alteration around a designated "flat" setting. The enclosure, measuring 22 x 10 1/2 x 10 1/2 inches, is constructed of solid and veneered pine; grille cloths are available in black or natural. Price: $139. The Marjen Models II and III ($169 and $249, respectively), have generally similar specifications and features flew Products latest audio equipment and accessories with additional tweeters and (Model III) woofers.
Heath catalog
The latest catalog of Heathkit products runs to 96 pages and describes several hundred electronic and electronics -related kits, many of which are designed to be assembled by to tally inexperienced constructors. The Heath product line includes audio equipment (receivers, amplifiers, tuners, tape machines, equalizers, mixers, and speaker systems) spanning a broad range of prices, as well as al ready -assembled turntables, phono cartridges, and headphones. There are also tele vision sets, console radios, musical -instrument amplifiers, and electric organs, all in kit form, together with test equipment, marine and amateur -radio electronics, and automotive and hobby accessories. Catalogs are free from: Heath Company, Dept. 350-04 SR, Benton Harbor, Mich. 49022.
New Four-channel Tape Deck by Akai
A moderately priced four-channel tape deck with track-synchronization facilities (Akai's term is "Quadra-Sync") is being introduced by Akai America as the GX-270DSS. The Quadra-Sync feature permits synchronized recording on all four channels in sequence, enabling the user to "build up" a final recording from separate parts re corded at different times and to replace some parts with others without affecting the rest of the material.
The three-motor, two-speed (7 1/2 and 3 3/4 ips) transport takes 7-inch reels and is sole noid switched. Automatic reverse is provided for playing back stereo tapes, and a pitch control (which operates in both record and play back modes) varies tape speed over a range of ±5 percent. Microphone/line mixing works by two-section knobs for each input channel, with the front sections controlling microphone levels and the rear the line levels.
The machine's record-playback frequency response is 30 to 21,000 Hz ±3 dB at 7 1/2 ips and 30 to 15,000 Hz ±3 dB at 3.75 ips, both with low -noise tape. For a 0 -dB recording level, harmonic distortion is under 1 per cent; signal-to-noise ratio exceeds 54 dB for a 0 -dB recording level. Wow and flutter are less than 0.07 percent at 7 1/2 ips. The GX-270DSS, which comes in a wood case, has dimensions of 17 1/2 x 18 1/2 x 7 1/2 inches. Price: approximately $900.
Kenwood Turntable With Anti-resonance Resin-concrete Base
The semi-automatic KD-2055 has a base molded of Kenwood's new "ARC" (anti-resonance resin concrete) material, a mixture of limestone, glass powder, and polyester res in. The high -density base has substantial mass and a high degree of internal damping, both of which are said to reduce audio-frequency vibration and acoustic feedback. The ARC material resembles polished marble.
The principal automatic feature of the two-speed (33 1/3 and 45 rpm) KD-2055 is an end-of-record tonearm return that also functions (when a pushbutton is pressed) to interrupt play at any point on a record. There is also a damped tonearm cueing mechanism. The KD-2055's arm is a tubular S-shaped design with adjustable anti-skating. The full-size platter is belt -driven, with wow and flutter of less than 0.06 percent and a rumble level lower than -65 dB. Dimensions (with the hinged dust cover supplied) are about 19 x 14 1/4 x 5 3/4 inches. Approximate price: $140.
Allison Model 4
The line of "Stabilized Radiation Loading" speaker systems from Allison Acoustics continues with the Model Four, which is de signed for shelf installation. The Allison practice of positioning the woofer as close as possible to the nearest room boundary is achieved in the Model Four with a top-firing woofer of 8 -inch diameter. Two of the manufacturer's "Convex Diaphragm" tweeters are used, one on each of two angled side panels. The system is meant to be installed with its back abutting a wall. Crossover frequency of the Allison: Four is 2,000 Hz, and the system has a minimum impedance of 6.5 ohms (8 ohms nominal). Minimum recommended amplifier power is 30 watts per channel; a 70 -watt peak input is said to produce an acoustic output of at least 0.5 acoustic watt over most of the frequency range. A three -position switch adjusts the frequency balance of the system from nominally flat to gradual high -frequency rolloff, simulating the overall balance of a typical concert hall. Overall dimensions are approximately 19 1/2 x 11 x 10 inches; finish is oiled walnut. Price: about $175.
NOTICE: All product descriptions and specifications quoted in these columns are based on materials sup pled by the manufacturer.
Recent fluctuations in the value of the dollar will have an effect on the price of merchandise imported into this country. Please be aware that the prices quoted in this issue may be subject to change.
ADs:
Sony
After people learn what we done, no one will heckle our speakers.
We're as close to the impossible as possible.
Our new speakers color sound.
Anybody's do.
Should they tell you otherwise, they speak with forked frequency response.
We at Sony developed the SSU-2000 with this grim reality in mind.
Our goal was to create a line of speakers with a minimum of coloration. With a frequency response flat and wide. With low distortion. And with repeatability. Which means each speaker we make will sound like the one before and the one after.
Searching and researching.
Before you can make a good speaker you have to make a lot of bad ones.
We turned out dozens of prototypes that were made with the same specs, but sound like they weren't.
That's because your ear is more sophisticated than our measurements.
You can hear how pure water is, for example.
The purity of the water in which the pulp for the speaker cone is pressed influences the sound.
But it would hardly change the frequency response-or any other measurements.
Now there are dozens and dozens of elements that interact this way.
Changing one changes the other and almost changed our minds about going into the speaker business.
But we stuck it out. Applying the age-old technique of trial and error.
That's why we labored for three years to bring you our speakers. While other manufacturers rushed frantically to market with theirs.
We keep the whole world in our hands.
Understanding how to control the sound of our speakers, we realized we had to control what went into them.
So we did the only logical thing.
We built a plant. Which does nothing but produce-under outrageously close control
-the components for our speakers.
Few companies watch what you hear so carefully.
Don't judge a bookshelf speaker by its cover.
Suggested retail prices: SSU-2000 $150 each,; SSU-1250 $100 each; SSU-1050 $130 a pair.
As you can see, a lot goes into producing a speaker that's not easily seen. (One beautiful exception-the handsome finish on our cabinets.) That includes the carbon fiber we mix into the speaker cone paper.
Carbon fiber is light and strong. Light, so our speaker needs less power to operate it, and is therefore more efficient.
Strong, so the cone won't bend out of shape in the high frequency range.
Moreover, carbon fiber won't resonate much. It has a low Q, and it took someone with a high IQ to realize it would absorb the unwanted vibration.
Unwanted vibration is also reduced by our cast aluminum basket, which is superior to a cheap stamped metal one.
We're confident that the results of our three year effort will be clear after three minutes of listening.
At which point,. far from heckling our speakers, you'll be tempted to give them a standing ovation.
1976 Sony Corp. of America.
Sony, 9 W. 57 St., N.Y., N.Y. 10019.
SONY is a trademark of Sony Corp.
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AKAI
Akai receivers.
Spread the word.
Howdy, pardner. I'm spreadin' the word about Akai receivers.
Them there Akai receivers sound as clear and sharp as a cowboy playin' his geetar by a prairie campfire.
Why, they sound so powerful good, it's like bein' right there! Just consider the Akai AA-1050.
It's got 50 watts per channel continuous output power at 8 ohms from 20 to 20,000 Hz with no more than 0.15% total harmonic distortion.
AKAI.
Ain't that an earful.
And Akai stereo receivers go for $200 to $900 suggested retail price. Nobody, I say nobody gives you more for the money.
So spread the word. Akai! A right fine name in stereo receivers.
Akai America, Ltd., 2139 East Del Amo Boulevard, Compton, California 90220
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We made the first Ortofon cartridge for us.
As far back as 1945, Ortofon was making the cutterheads used throughout the world to cut the grooves in master phonograph records. But the phono playback cartridges then available could not put our cutterheads to the test for sensitivity and capacity.
So we made our first phono cartridge. For us.
Since then our cutterheads have moved ahead-with a quality we couldn't even imagine in 1945. So have our phono cartridges.
The new MC20 moving coil phono cartridge is the best we've ever made. We believe it is the finest available for professional or home use.
The MC20 has the lowest stylus tip mass ever attained on a phono cartridge. A flaw less, fine line diamond stylus is fixed directly (without the usual sleeve) to a stepped, low mass cantilever. Beryllium filling enables the cantilever to attain rigidity despite its minute dimensions. The moving coils are wound with wire one-fifth the thickness of a human hair.
The moving coil principle, with its low inertial mass, wider frequency response, low distortion as well as low tracking force, has clearly established its sonic superiority over any other phono cartridge system. Our new pre-preamplifier, the MCA-76, is also available to process the signal of the MC20 or any other moving coil cartridge.
The MCA-76 features low-noise circuitry, a subsonic filter and a by-pass switch which accommodates all magnetic cartridges.
We'll be pleased to forward complete data on the entire Ortofon line. We suggest that you write to us directly.
Ortofon, 122 Dupont Street, Plainview, New York 11803.
ortofon
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THE FRONT ISN'T THE ONLY PLACE THIS DECK IS LOADED.
Front load design means you can stack this deck anywhere; you put your components together the way you want them; no more tail wagging the dog.
The MK-610 Front Loading Cassette Deck with Dolby.
Suggested retail price $249.95.
Cue and Review function lets you pick out your selection when you fast forward or rewind a tape.
Self locking pause control stops transport in play or record without canceling that mode.
Built-in Dolby-B noise reduction system helps eliminate tape noise without impairing overall frequency response.
Separate bias and EQ switches for standard and Chromium tapes,
DOKORDER
5430 Rosecrans Avenue
Lawndale, CA 90260
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THE SOLUTIONS to hi-fi's most unrecognized problems
The Problems: acoustic feedback and structure-born vibration.
The Solutions: Netronics Acousti-Mounts and Speaker-Pods Feedback may be the mysterious reason why your sound is muddy, your turntable rumbles, and in severe cases, you can't turn up .the bass or volume controls without speaker howl. Designed specifically to accommodate today's fine turntables, the Netronics turntable Acousti Mount sub-base platform suppresses acoustic feedback by effectively decoupling the entire turntable assembly from structure-born vibration- up to 30dB of isolation.
The vibrating speaker cabinet, which causes much of the turntable feedback, also causes walls and other objects to vibrate producing spurious audible distortions as well as annoying the neighbors. These vibrations can now be isolated using "Speaker Pods" designed to isolate the speaker cabinet from the room.
Simply inserted between the floor or shelf and the speaker they isolate vibration up to 40 dB.
Julian Hersh's test report "We double that any other 515 trivesirnen; could c.h on improvement In 0 record playing system
MONEY BACK IF NOT DELIGHTED
Canadian residents Patents Pending ADD $1.00 per item
Please Send: Conn. res. add 7.25 1 6x1 3 1/2 turntable Acousti-Mount $15.00 ea.
1 9x1 31/2 turntable Acousti-Mount $1 7.50 ea.
Set of 4 "Speaker Pods" (spkrs. to 45 lbs.) Si 1.95/speaker
For heavier speakers use 2 extra pods for every 15 lbs. over 45 lbs.
NAME ADDRESS CITY ZIP LI Send information on direct drive turntable kits
NETRONICS R & D LTD. Route 6, Bethel, Conn. 06801
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Our acoustic lens is a 5 cent piece of felt.
It's not always the expensive things you do that help make a product great.
The acoustic lens on our tweeter is a case in point.
It's just one small but significant part of a very complex design concept that makes up the Interface:A vented, equalized speaker system. One of the most measurably accurate speakers you can buy.
To maintain this accuracy over very high frequencies with our front mounted tweeter, we searched for a special lens to disperse sound widely and uniformly throughout the listening area.
We could have used a more expensive device, but frankly, the results didn't justify the cost.
That's why we turned to our 5¢ piece of felt. And as Stereo Review says in April, 1976
..."dispersion of the highs was excellent--easily as good as we have ever heard from a forward facing cone driver ... evidently the felt acoustic lens does what is claimed for it." A savings? Sure. But more important, a better product. You can hear the Interface difference at your audio dealer. And it won't cost a nickel to listen.
Interface:A. Electro-Voice, Inc. a Gulton company 616 Cecil St., Dept. 174 F, Buchanan, Michigan 49107
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225, 287 people already know listening is only half the fun
A classic
TEAC's A-2300SX is the latest version of a classic. The most reliable tape deck ever made. As of April 1976, more than 225,287 have been purchased. And they have the lowest incidence of repair and maintenance of any deck on the market today.
What is it about the A-2300SX that makes its performance and acceptance so remarkable?
Three motors
The A-2300SX features TEAC's heavy-duty, 3-motor transport system. Each reel has a motor to assure proper tape tension at all times. A third motor drives the capstan and was designed to allow electrical, instead of mechanical, speed change. No gears. No idlers.
Just dependable, smooth operation.
Fingertip control
With three motor transport you get the flexibility of touch button control. You can switch instantly from mode to mode-play, fast forward, rewind, pause and record.
With our new cue lever control, editing is made easy. Instant starts. No bounce. No click.
With one touch of the EQ and bias switch you adjust the machine to different types of recording tape.
Less noise. Less hiss. Better response.
Three heads
Each of the three basic functions-erase, record and playback-is assigned to a separate head. Each head is designed to perform its specific assignment, and to keep performing use after use.
These are some of the reasons so many TEAC tape recorders have been sold. Another reason is that so many people get tired of just listening to music.
Listening is fun, of course, but if you really want to enjoy your stereo system, try adding fun ...
try adding a TEAC A-2300SX. Just remember, you won't be alone.
TEAC-- The leader. Always has been.
TEAC Corporation of America, 7733 Telegraph Road, Montebello, CA. 90640, TEAC 1976. In Canada TEAC is distributed by White Electronic Development Corporation (1966) Ltd.
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WHY THE BOX?
Perfect listening.
All Stax Earspeakers connect through an adaptor box to your power amp, integrated amp or receiver, just like speakers. The box permits a vastly superior electrostatic principle to be used in Stax personal listening instruments.
Results? Incredible transients. Response curves that match the human ear perfectly. And no "flaking" of preamp circuitry that occurs with those non-box "headphones" that plug into the front panel.
Why the box? Because you can tell the difference.
STAX:
The inventor of the earspeaker.
Distributed in the U.S. by: American Audioport Columbia, MO 65201
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Nakamichi proudly introduces its first all-electronic components, backed by world-famous Nakamichi engineering and manufacture. The 610 Control Preamplifier and the 620 Power Amplifier offer no-compromise performance and flexibility that is dearly Nakamichi. Grouped with the exciting new 600 Cassette Console, they comprise the Recording Director Series-elegantly styled with identical profiles, each is a study in human engineering.
The 610 Control Preamplifier is three devices in one. As a stereo preamplifier its performance and color-free sound invite comparison with the fines units available. It also functions an advanced test center, with in test tones, pink noise gene and precision meters- just name a few. As a studio-qual mixer, any 5 of 19 different puts can be selected in many combinations. The creative audiophile will find no end to the 610's capabilities.
Phono S/N Ratio (IHF-A): Better than 80 dB (0 dB=1 mV); THD: Less than 0.005% 61 Meters:-40 dB to +10 dB range, peak reading, Frequency Response: 5 Hz-150 kHz ±0.75 dB
The 620 Power Amplifier boasts harmonic and I M distortions so low they cannot be reliably measured with the best test instruments. It is unconditionally stable under any load, including a direct short circuit. The power supply packs more punch than units several times its size. A unique biasing circuit cuts idling current by 1/20 and keeps the bold heat sink fins cool to the touch.
Peak indicator lamps glow green or red for each channel at pre settable power output levels.
For complete information, write Nakamichi Research (U.S.A.), or see your Nakamichi dealer soon and sk for a demonstration of e 610 and 620 together with the incredible 600 Cassette Console (now also available in matte black finish).
Power Output: 100 watts per channel min RMS, 8 ohms, 5 Hz-20 khz, with no more than C.01% THD 6 IM Distortion: Less than 0.002% at 100W/8 ohms (60 Hz: 7 kHz. 4:1); S/N Ratio: Better than 120 dB.
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All other turntables ...
Introducing the Accutrac 4000---Its father was a turntable.
Its mother was a computer.
The Accutrac 4000 is the most radical new idea in record-playing technology since the introduction of the _..P It's a marriage of solid-state integrated circuitry, infra-red electro-optics and the latest in direct-drive engineering. We've replaced hundreds of mechanical parts with efficient, silent electronics: in fact, the functions of nearly 10,000 transistors are being performed by just two logic chips.
The result: The Accutrac 4000 is the most accurate, reliable, noiseless turntable ever invented. And it even lets you re-arrange selections on a record to hear them in the order you want.
The Accutrac 4000 reaches new lows.
Wow and flutter are down to a completely inaudible 0.03% W.R.M.S. Rumble,-70dB (DIN B). Tracking force, a mere 3/4 gram. And tonearm resonance, the ideal 8-10 Hz.
Oar direct-drive motor brings the massive die-cast platter to full speed instantly. And keeps it there with the help of electronic sensors which adjust for power fluctuation.
There's no way a turntable can be any more precise.
Now, listen to the selections on a record in the order you want.
Once we developed the electronic control system, it was a logical step to extend its capabilities.
So now, instead of just listening to a record, you can re-arrange the playing order of the selections, repeat them, even skip the ones you don't like.
Just by pushing a button.
Suppose you want to, hear selections 5, 3 and 7.
Simply press the buttons marked 5, 3 and 7. In fact, you can pre-set the sequence with any combination of up to 24 commands.
And if you don't want to leave your chair to give the orders, beam it in by cordless remote control with the transmitter (lower left) and receiver (above).
The Accutrac 4000 system: it not only plays records as sensitively as possible, it also takes better care of records than is humanly possible.
The arm your fingers never have to touch., Because the tonearm is electronically driven, not manual, you never risk dropping it accidentally and scratching a record, or damaging the stylus.
The reason for this miracle is the minute infrared scanning beam in the head that reads the surface of the record and directs the tonearm to follow your instructions.
And it does it with absolute freedom, because the servo-motor that drives the tonearm is decoupled the instant the stylus goes into play.
You don't have to cue manually, either: electron ics takes care of that, too. In fact, the infra-red eye will return the stylus to the same groove it left, within a fraction of a revolution. Even the best damped cue lever can't provide such accuracy. Or safety.
The Accutrac 4000: the great protector.
Everything about the Accutrac 4000, from the perfect freedom of the tonearm to the logical placement of the controls outside the dustcover has been done for one reason: to extend the life of a record.
Which is why, once you've played the Accutrac 4000, you'll never be able to trust your records to another turntable again.
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Responsive. Sensitive. Bold when they should be. Subtle when they should be.
For a living room rock concert... or a tranquil laid-back evening spent with your moods. Eyes
closed, ears open. Feet tapping or feet up.
The new Jensen Spectrum Series has achieved a new plane of sound reproduction.
Remarkable clarity. Admirable quality. And fullness of sound from the deepest lows to the-- top-of-the-scale highs.
Beautifully finished natural hardwood walnut veneer cabinets accommodate a family of advanced sound systems and features.
Foam woofer suspension for clearer, more accurate bass response.
Powerful ceramic magnets for lower distortion, high power handling, greater clarity. And a precise crossover design that sends sharply defined high and low signals to sensitive tweeters and powerful woofers.
On some models, the Spectrum Series features true-to-life midrange drivers for the subtle in-between frequencies. And specially designed dome tweeters for extra-wide 170° dispersion of brilliant highs.
Behind the grill of each Spectrum speaker system-a continuously adjustable personalizing control (two on the Models 530.540 and 550) graduated in decibels. It lets you adjust your Spectrum speaker to the room... to personal tastes ... to the nuances of a guitar or a violin.
The Jensen Spectrum Series speakers. Models 520, 530, 540 and 550. SOUND LABORATORIES Perhaps the clearest sound reproduction you have ever encountered.
Division of Pemcor. Inc
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Philips GA 212 Electronic Turntable
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WITH BSR, YOU DON'T HAVE TO PAY EXTRA FOR THE EXTRAS.
Only BSR gives you much more without making you pay more.
With She 200 BAX you get the base, dust cover, three different spindles and a stylus wear indicator at no extra charge.
We also include an ADC induced-magnet cartridge; so unique it's patented.
That's more than you get from Dual, Garrard or BIC.
And that's just the beginning.
The BSR belt drives have built in features that make records sound better and last longer: like a viscous damped cueing lever, calibrated force adjustment End anti-skate control.
The prices are much lower than you'd expect. Under $140 for the 200 BAX, under $no for the 100 BAX and under $100 for the 20 BPX. Sure, you could spend more for a turntable. But even then, you might not get as much as you get from BSR.
For tuff details, see your dealer or write: Consumer Products Group, BSR (USA) Ltd., Blauvelt, N. Y. 10913.
YOU COULD PAY MUCH MORE, BUT NOT GET AS MUCH.
Dust Cover ADC induced Magnet Cartridge Locking Umbrella Spindle Rotating Single-Play Spindle Continuous Repeat Spindle Styles Wear Indicator
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Fuji
Every Fuji cassette means beauty and purity in sound. No hiss, no dropouts. Widest frequency response and dynamic range. Total reliability. Fuji high-fidelity cassettes such as the FX will give you the best performance possible on your tape recorder. Already widely recognized by experts as the finest cassette in the world. Fuji. The cassette of the pro.
FUJI FILM -- Photo Film U.S.A.,. inc., The Empire State Building, New York, N.Y. 10001
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Bose
A speaker unlike any other.
The Acoustic Matrix enclosure yields performance unattainable with a conventional wood enclosure.
Nine drivers are mounted in the Acoustic Matrix enclosure, four on each rear panel and one facing forward.
Introducing the Bose 901 Series III.
In 1968, Bose introduced an unconventional loud speaker system: the legendary Bose 901. Now, we are introducing a new speaker of revolutionary concept, design, materials, and performance: the Bose 901 Series III.
What you will hear.
You will be struck by a sense of immediacy and presence, spaciousness of sound, and accurate stereo image almost anywhere in the room.
Equally startling are the realism and accuracy of the timbre of each instrument, the clarity and dynamic range of the deepest bass notes, and the precise definition of individual instruments.
Efficiency Most dramatic, however, is the remarkable efficiency with which this level of performance is achieved:
the new 901 Series III can produce the same volume of sound with a 15 watt amplifier as the original 901 with a 50 watt amplifier.
This dramatic breakthrough in the basic economics of high-fidelity makes it possible to put together a high performance component system at a lower price than was previously possible, even though the 901 Series Ill is a more expensive speaker than its predecessor.
A tapered Reactive Air Column radiates the lowest bass from the four drivers on each rear panel.
Technology Spectacular performance and efficiency are the results of proven Bose design concepts and technological innovations that include the unique, injection-molded Acoustic Matrix' enclosure and a new, ultra-high-efficiency driver.
At the same time, the 901 Series III is (as is the original 901), a Direct/Reflecting speaker with an electronic equalizer.
To appreciate t e spectacular performance of the Bose 901 Series III, simply ask a Bose dealer to play the 901-III in comparison to any other speaker, regardless of size or price.
For a full color 901-III Key to both performance and efficiency is the new 901-III driver, with molded frame and aluminum helical voice coil.
brochure, write Bose, Box SR1, The Mountain, Framingham, Mass. 01701.
For the nearest Bose dealer, call (800) 447-4700. In Illinois call (800) 322-4400.
The Mountain, Framingham, Mass. 01701.
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One even improves your tuner.
Introducing the RS-671AUS and the RS-677US with Dolby' FM. Both decks will dramatically improve the sound of your cassettes. But with the RS-677US you'll also get a dramatic improvement in the sound of your tuner. Like a quieter FM S/N ratio. Increased dynamic range. Even better FM reception.
And to improve the sound of your cassettes both units employ a two-motor drive system. Including an electronically controlled DC motor used exclusively for capstan drive.
The results: 0.075 % (WRMS) wow and flutter for the RS-671AUS. And 0.07°/o (WRMS) for the RS-677US.
You also get a quiet S/N ratio of- 65dB (CrO2 tape, above 5kHz). As well as lower distortion and excellent transient response.
The reasons: A Technics low-noise pre amplifier. Selected low-noise transistors.
And Dolby.
And both decks also give you an extremely wide frequency response of 30 Hz- 17kHz
Solenoid Remote Control.
Ws, (CrO2 tape). Thanks to the exceptionally narrow gap of our patented HPF heads.
You'll also get quiet, highly accurate recordings, with plenty of dynamic range, because both decks have peak check VU meters. So you can precisely set recording levels for the barest minimum of overload distortion, especially when recording from live sources.
Both decks have memory rewind. Fast-acting silent electronic switching. A lockable pause control. Mike/line mixing.
A CrO2 tape selector. And with the RS-671AUS, you'll get selectors for high and low bias.
And with the RS-677US, memory play and solenoid activated remote control.
So when you're ready to improve your system, the RS-671AUS and the RS-677US are ready for you.
Dolby is a trademark of Dolby Laboratories, Inc.
Cabinetry is simulated wood.
Technics by Panasonic
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RESEARCH DELIVERS A Quantum Jump in Record Care New D3 Fluid
1. Unmatched activity, plus safety to vinyl additives (the critical compounds of longevity).
2. A secret non-adhering anti-static system that is measured in parts-per-billion!
3. A special chemical "release system" (pat, pend.) that allows suspended contaminants to pull away from critical micro-grooves.
The Systems Approach Of the Discwasher Brush D3 plus the patented directional micro-fibers and absorbent backing remove-rather than line up-all dust and suspended debris.
Discwasher Group 1407 N. PROVIDENCE COLUMBIA, MO 65201
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Find out why three bright young men left banking, teaching and insurance to sell Lanier dictating equipment.
Richard Marks, Former Banking Supervisor, "I never thought I was the type to be in sales. I have a master's in marketing and I saw myself in administration. But I also saw that things moved very slowly at the bank. Especially salaries and promotions.
"A friend suggested Lanier." "So I looked into their record.
They introduced seven new products in just four years. They had taken on IBM, Dictaphone and Norelco-and won. Lanier was a fast-moving, aggressive company. This year they even expanded into the automatic typewriter business.
"I liked what I saw." "So I went to work for Lanier.
"I've been here 15 months, and so far I've doubled what I was making at the bank. I feel like I'm really getting ahead. And there's room to grow. They're looking for management from within.
"I feel like I've got a career at Lanier, not just a job." Paul Lieberman Former Teacher "After several years of teaching, I was ready for a change. I wanted to work with a wider variety of people. More-aggressive people.
Real professionals.
"I found them at Lanier." "The first thing that impressed me was the way Lanier introduced me to their company. They gave me a chance to spend a day in the field with a salesman, so I really got a feel for the business. Nobody comes to work here with rose colored glasses.
"Then there was the training program." "To me this was a real in-depth opportunity to become a professional--as a salesman and a word processing consultant. That kind of support shows they really care about your future.
"I've been with Lanier for a year, and I haven't been disappointed. In the opportunities, or the people."
LANIER: Ron Raven Former Insurance Salesman "One thing about life insurance, nobody really relishes the thought.
"With dictating equipment, you've got something people really like to hear about. Dictating is six times faster than writing.
It can make anybody more productive.
"With Lanier, you've got the best and most complete line of products in the business." "Lanier put standard cassette dictation in the office. They pioneered centralized input systems. Technology like that gives you a real edge on the competition. Which may be why Lanier has tripled their sales in less than five years.
"At Lanier, what you make is directly dependent on what you do." "Your successes show up in your paycheck."
LANIER BUSINESS PRODUCTS. AN OXFORD INDUSTRY
An equal opportunity employer.
If your job isn't as good as you John Hegarty, toll-free at are, maybe you should work for (1-800) 241-1706. He's interested Lanier. Call our personnel director, in hearing from you.
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Do-it-purse!, JBL.
Take the guts of what makes JBL
JBL and adapt it to your own ideas of what a loudspeaker system should be.
Mix and match with forty seven individual JBL components--horns, lenses, dividing networks, transducers, everything.
And when you've found your perfect sound, we'll help you find somewhere to put it: The JBL Enclosure Construction Kit, with complete plans for building your own loudspeaker enclosure from scratch.
See your authorized JBL Loudspeaker Components dealer for the start of a great new team in sound:
You and JBL.
Gentlemen:
Send me your loudspeaker components catalogue and the name and address of my nearest dealer.
Name Address City State Zip
Mail to:
James B. Lansing Sound, Inc.
8500 Balboa Blvd., Northridge, Ca. 91329
James B. Lansing Sound, Inc. 8500 Balboa Blvd., Northridge. Ca. 91329
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Needle in the hi-fi haystack.
Even we were astounded at how difficult it is to find an adequate other-brand replacement stylus for a Shure cartridge. We recently purchased 241 random styli that were not manufactured by Shure, but were being sold as replacements for our cartridges.
Only ONE of these 241 styli could pass the same basic production line performance tests that ALL genuine Shure styli must pass. But don't simply accept what we say here.
Send for the documented test results we've compiled for you in data booklet #AL548. Insist on a genuine Shure stylus so that your cartridge will retain its original performance capability-and at the same time protect your records.
Shure Brothers Inc.
222 Hartrey Ave., Evanston, IL 60204
In Canada:
A. C. Simmonds & Sons Limited
TECHNICORNER. The criteria for these tests involved the eight standard production line inspections used for all Shure styli:
Visual and mechanical inspection, tip configuration, trackability, vertical drift, 1,000 Hz output level measurement, channel separation at 1,000 Hz, channel separation at 10,000 Hz, and frequency response.
Only genuine Shure styli have the name SHURE on the stylus grip and the words "This Stereo Dynetic stylus is precision manufactured by Shure Brothers Inc." on the box.
Manufacturers of high fidelity components, microphones, sound systems and related circuitry.
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Also see:
TAPE HORIZONS: Sync and Swim, by CRAIG STARK
LETTERS TO THE EDITOR (Feb 1977)
Source: Stereo Review (USA magazine)