MEMOREX HIGH BIAS TEST NO. 5. WHICH HIGH BIAS TAPE STANDS UP TO A GENR AD REAL-TIME ANALYZER?
The GenRad 1995 Real-Time Analyzer is among today's state-of-the-art devices for accurately measuring and displaying audio signals. That's why we used it to show that MEMOREX HIGH BIAS is today's state-of the-art high bias cassette tape.
When tested at standard recording levels against other high bias tapes, none had a flatter frequency response than MEMOREX HIGH BIAS.
And, the signal/noise ratio of MEMOREX HIGH BIAS proved to be unsurpassed at the critical high end.
Proof you can't buy a high bias cassette that gives you truer reproduction. And isn't that what you buy a high bias tape for?
Is it live, or is it MEMOREX
The GenRad 1995 Integrating Real-Time Analyzer measured signals from a Nakamichi 582 cassette deck. Input signal source was "pink noise" at 0dB (200 nanowebers-standard record level). If you'd like a copy of the test results, please send a self-addressed, stamped business-size envelope to the address below. Ask for the GenRad Test.
For unbeatable performance in a normal bias tape, look for Memorex with MRX3 Oxide, in the black package.
The Evolution of Excellence
The GenRad 1995 Real-Time Analyzer is among today's state-of-the-art devices
In 1976 Pickering launched a new modern high fidelity era by introducing the first of a new generation of phono cartridges, the Pickering XSV/3000, acclaimed atop performer by critics and reviewers worldwide. Now Pickering takes the Stereohedron Series one step be yond excellence with the new XEV/4000. A lightweight, high energy, samarium cobalt magnet and shaped-for-sound Stereohedron Stylus tip are major innovations that eclipse previous performance standards in four crucial areas. Improved tracking ability. Expanded frequency response range. Wider channel separation. And feather-light treatment of the record groove.
XSW 4000 ... the next generation of sound.
For further information write to:
Pickering & Co. Inc., Sunnyside Blvd., Plainview, N.Y. 11803
PICKERING: "for those who can hear the difference"
Now there's a two-way speaker with remarkable midrange without a midrange.
The Infinity RSa
It could only come from Infinity.
A two-way speaker with midrange (as well as tweeter) controls--yet there's no midrange driver! A new and unique crossover in the RSa allows adjustment of the mid range. This unprecedented control actually permits you to vary depth as well as projection of the musical image; accommodating the program material, your room acoustics and your personal taste.
This flexibility, clarity and detail of midrange is unachieved by even much more expensive three-ways.
Why is this important? Because the fundamental tones of most instruments lie in the midrange: 350 to 5000 Hz. When this musical information is poorly reproduced, you're not hearing the whole truth.
Listen to a traditional speaker system; characteristically the overall sound is thin, veiled and lifeless.
You hear notes, not musicians.
Then listen to the Infinity RSa.
It breathes life. It has warmth.
Infinity scientists and musicians were determined to create a modestly-priced speaker in the extravagant Reference Standard family tradition.
So we gave it some of the family jewels.
We gave it EMIT? acclaimed by audio critics world-wide for its delicacy, transparency and smoothness.
We gave it polypropylene, our new speaker cone material with acoustic properties making it superior to paper in every respect; it is ideally light, stiff, stable and acoustically inert.
The meticulous amalgamation of these elements has produced the incomparable RSa.
The least is for your eyes as well.
RSa is crafted with the finest oak veneers available. The tab: about $200.
To learn more about the peculiar Infinity alloy of music and science, please ask any Infinity dealer for our new brochure, "The Creative Technology of Infinity Speakers:' It will tell you part of the story.
Then listen to the RSa.
It will tell you the rest.
Infinity----We get you back to what it's all about. Music.
A toll-free call to (800) 423-5244---or from California, (800) 382-3372---will get you the nearest Infinity dealer's name and address.
1979, Infinity Systems. Inc.. 7930 Deering Ave. Canoga Park. CA 91304, (213) 883-4800.
Onkyo
An incredible sound experience awaits you. An experience that technology alone finds hard to explain. You'll hear music of such stunning purity and sensual rich ness, that you'll wonder how any audio system could make that much of a difference.
The Onkyo CP-1030F That's the secret of Onkyo. The unique ability to take you several steps beyond pure technology ... to a world of more exciting sound. And we provide it in all our components ... beginning with turntables.
The Onkyo CP-1030F Fully-Automatic Turntable is an outstanding example. It takes far greater advantage of today's most sensitive high-compliance cartridges . . .
providing more precise record groove tracking, while silencing out vibrations from record warp, the turntable motors, even sound The Onkyo TA-2080 waves produced by your speakers.
The CP-1030F is rich with important new concepts . .. a low mass, straight line carbon-fiber tonearm ... infrared sensors for smoother automatic tonearm control ... Quartz-locked direct-drive accuracy . . . and a new triple-insulated suspension. All combine to produce purer sound. And the CP-1030F is just one of five advanced new turntables from Onkyo.
In stereo cassette tape decks too, Onkyo achieves more perfect sound. The Onkyo TA-2080, for example, provides a computerized control system called "Accu-Bias" ... which automatically assures that every recording you make is superior, including new metal tapes.
Every tape has a different bias setting requirement . .. even two tapes of the same formulation from the same manufacturer. "Accu Bias" automatically senses each tape's unique bias needs, then makes the precise system adjustments to provide it. Brighter, cleaner high notes are the reward.
The Onkyo TA-2080 also pro vides a rich and important array of other high performance features.
3-Heads with a 2-motor/2 capstan drive system . .. a Dolby* noise reduction system with switchable MPX filter and two channel calibration controls . .. both VU meters and 10-step LED peak indicators. And the TA-2080 is just one of four Onkyo cassette tape decks.
Onkyo integrated stereo amplifiers provide an extraordinary...and unique ... sound experience. Their special Super-Servo circuitry totally eliminates the sonic "ghost signals" common to DC power amplifiers. As a result, each instrument and voice sounds purer and more individually real ... regardless of volume level.
You'll experience-perhaps for the first time-stereo with a fully discernible third-dimension.
There are three Onkyo integrated stereo amplifiers to select from. .
All with Super-Servo, LED peak power indicators, and other advanced features. A companion series of three Onkyo stereo tuners is also available.
Of all our components, the most widely known are our stereo receivers. And with good reason.
Their FM sections are clearly superior ... picking up weak stations noiselessly and strong stations without distortion. And Onkyo was the first to revolutionize receiver design with Quartz-Locked FM tuning and the unique
The Onkyo A-7090
"Human Touch Sensor" control.
In all, there are 6 Onkyo AM/FM stereo receivers ... with the in credibly advanced TX-8500 MK- II paramount among them. With 160 Watts per channel... digital FM frequency display ... a memory to preset up to seven FM stations ...
The Onkyo TX-8500 MK II and a built-in Dolby' FM circuit ... the Onkyo TX-8500 MK- II is one of the most advanced receivers ever conceived. And it's just one of 6 Onkyo receivers to pick from.
In speaker systems, few are as innovative, accurate and impressive as the Onkyo F-5000 3-way, Phase Aligned Arrays Speaker System. The F-5000 delivers more exciting sound ... with precise three-dimensional imaging.
Speaker alignment is one of the reasons. Even more significant is the unique Onkyo planar woofer, The Onkyo F-5000 planar midrange, and Direct Drive Membrane Tweeter.
Gone are the sound interference patterns and phase cancellations that cone shaped speakers always provide. Instead is a listening experience with the same true frequency relationships of the performance.
Experience "the secret of Onkyo" now, at your Onkyo dealer. Hear audio components so advanced, they transcend mere technology.
Onkyo USA Corporation 42-07 20th Ave., Long Island City N.Y. 11105
(212) 728-4639.
Auto Sound Just Got Serious
The Voice of the Highway from Altec Lansing
Are you content to use toy loudspeakers with front-end gear that sells for $300 and more? If you are, good luck. If you're not, read on.
Altec Lansing has been solving the world's most serious sound problems for 43 years. So when we turned our minds to the problem of putting quality sound on wheels, we meant business.
A quick look around showed us that it hadn't worked to merely adapt conventional speakers to car interiors or make miniature versions of hi-fi components. So we began with the car--not the components.
We thoroughly explored the car's uniquely difficult acoustical environment. Then we designed The Voice of the Highway: A group of speakers that work with any car sound system, are adaptable to a wide variety of body styles, and produce quality sound that, until now, was impossible to achieve in a car.
It's a system of options. Separate high-frequency (TK1), extended range (SK1), and sub-bass (SW1) speaker components that together produce optimum results. And they can be mixed or matched to fit a variety of space needs and sound desires, or enhance a currently installed system. Plus, there's a 6" x 9" full range Duplex speaker that installs easily in the door.
And we built all Voice of the Highway speakers to be efficient so their clean, clear, tight sound gets through traffic noise without pushing even modestly-powered amplifiers past their limits.
The Power Bass and TK1 Restore the Music You're Missing.
And they complement virtually all quality automotive stereo systems, either as a complete speaker system or as add-on accessories.
The AL1 System includes a pair of TK1s, a pair of SK1s and a SW1 Power Bass.
SW1 Power Bass The SKI, 5 1/4" extended range speaker can stand on its own where installation space is extremely limited.
Rear view of the Power Bass, showing built-in amplifier. When added to any tape player or radio, the Subwoofer bi-amplifies the system, improving the dynamic range and reducing distortion.
The SW1 Power Bass self-powered subwoofer gives deep bass to auto sound where none existed before.
It is destined to become THE automotive sound accessory of the eighties.
Its control module balances the bass output to the rest of the system.
The Power Bass' unique die cast structure houses a 40-watt power amplifier, electronic crossover, balanced inputs and active equalizer, and functions as the amplifier's heat sink.
The TK1, 3" high frequency driver covers the very top of the musical spectrum adding brilliance and clarity.
you're serious about putting quality sound on your wheels, contact your local Altec Lansing dealer, or Altec Lansing.
The Voice of the Highway from Altec Lansing. Auto sound just got serious.
1515 SOUTH MANCHESTER AVENUE, ANAHEIM, CALIFORNIA 92803
The new Sansui G-4700.
A double-digital receiver with all the right numbers.
Digital readouts and digital circuitry. Great specs. And the best price/performance ratio in the business. All the right numbers. That's the new Sansui G-4700. Just look what we offer:
Double-Digital Design: The front panel of the G-4700 has a bright electronic digital readout that shows the frequency of the station you've selected; and behind the front panel is one of the most advanced tuning systems in the world.
Sansui's patented Digitally Quartz-Locked Circuit uses a precise quartz crystal time base to keep your station locked in, even through many hours of listening or if you turn the receiver off and back on again.
Conventional quartz-controlled receivers use analog phase comparison circuits that can become inaccurate because of harmonic interference. Our system uses a new LSIC (Large Scale Integrated Circuit) digital processor that actually counts the vibrations of the quartz crystal to compare to the tuned frequency. The frequency is perfectly locked in the instant you find the station you want.
With this unique Digitally Quartz-Locked system, the G-4700 delivers high sensitivity (15dBf, mono); a better signal-to-noise ratio (75dB, mono); and c better spurious rejection ratio (70dB).
DC power amplifier: Power is ample for almost any speaker made, with 50 watts per channel, min. RMS, both channels driven into 8 ohms from 20 to 20,000Hz with no more than 0.05% THD.
And the wide bandwidth DC power amp circuit responds quickly to transient music signals for the most accurate and pleasing music reproduction.
What you hear is clean and sharp, just the way it was recorded.
Electronic LED power meters: Don't worry if your present speakers can't handle 50 watts. The array of fast-acting LED's (Light Emitting Diodes) on the Sansui G-4700 lets you monitor and control the output level so you don't damage your speakers.
Electronic tuning meters: Two fluorescent readouts help to zero-in on each station with accuracy and ease. Both the signal strength and center-tune indicators operate digitally for precise station selection, and the nearby LED verifies that the quartz circuit has locked in your station.
Superb human engineering: A full complement of genuinely useful knobs, switches and jacks gives you complete control over what you hear and how you hear it.
Ask your authorized Sansui dealer to demonstrate the G-4700. Listen to the music. You'll love what you hear. Look at the numbers. You'll love what you see.
SANSUI ELECTRONICS CORP. Lyndhurst, New Jersey 07071 Gardena. Ca. 90247
SANSUI ELECTRIC CO., LTD., Tokyo, Japan; SANSUI AUDIO EUROPE S.A.. Antwerp, Belgium; In Canada: Electronic Distributors
Upgrade to Aiwa
AIWA, AD-M700 3-HEAD, METAL TAPE COMPATIBLE CASSETTE DECKS
We'll go head to head with anyone.
Aiwa's AD-M700 cassette decks in contemporary-styled silver or in a black rack-mount handle cabinets have a 3-head Double Dolby* NR configuration. So do some high-priced decks. What the high-priced decks don't have is Aiwa's unique V-cut head geometry to cancel out low-frequency contour effect, i.e., get rid of the roughness. While the record and playback heads are placed in single housing, they are completely separate, allowing each head to have the ideal gap width for its specific purpose. This provides low noise recordings with extended frequency response.
To match this supreme head-system performance, we've used a 2-motor tape transport for dependability and smoothness as well as a phenomenal 0.04% Wow and Flutter WRMS.
Finally, to make the most of Aiwa's superb heads and transport system, we've put in a continuous variable bias adjust control for the optimum flat response regardless of what-or whose-tape you use, including metal particle tape.
All of this gives you terrific sound with a frequency response of 20-19,000Hz with metal tape; S/N ratio of 65dB (Dolby on, FeCr tape). Then we added these fine touches for convenience and versatility...feather-touch logic controls, continuous repeat and memory replay, 5-point multi-color peak reading LEDs, REC/MUTE edit replay and a host of other high-priced features that come with any Aiwa cassette deck. Look for Aiwa's AD-M7000 in silver; AD-M700BU in rack-mounting black. We've used our heads. For you.
Dolby is a trademark of Dolby Laboratories, Inc. AMERICA, INC. 35 Oxford Drive Moonachie, New Jersey. 07074.
TEAC TODAY THE X-SERIES.
You're looking at four new machines that have more in common with data recorders than audio recorders. Together they are called the X-Series. And they bring a totally new kind of technology to the open reel format.
Each X-Series transport is an instrumentation mechanism.
For 15 years, this TEAC design has stood the grueling test of time in computer installations where dependability is worth millions.
The basic configuration is closed-loop dual capstan. It's extraordinarily quiet, stable and precise. Wow & flutter is very low Speed accuracy very high.
Three DC motors drive the tape. They're used to keep changes in motor temperature to a minimum under different loads so constant torque is maintained.
Our Magnefloat flywheel assembly, a completely new concept, uses magnetics rather than mechanics to eliminate problem-causing springs and pressure plates. Axial variations between the tape and capstans are prevented so proper tracking is assured. The result is highly accurate audio reproduction even after years of hard use.
The X-Series transport maintains ideal tape–to-head contact. Audible drop-outs, level and frequency losses are absolutely minimized. Frequency response is wide and flat. And signal articulation is unusually clear.
The brain behind the trans port is our LSI control chip. It eliminates the need for mechanical relays so transport control is faster, more positive and reliable. The LSI also lets us pro vide full motion-sensing in the X-10 and X-10R.
Within the X-Series, machines have been specifically designed for bi directional record and play back. Perfectly symmetrical head stacks (6 heads in all) assure top performance in both directions. There's automatic reverse and repeat.
And two-way cue monitoring.
New audio electronics accompany this new transport technology. Record and playback amplifiers are quieter and completely free of audible distortion.
The sound is cleaner, more faithful to the source. The fidelity is unsurpassed.
An option previously available only on our professional recorders can now be added to any X-Series machine. Called dbx I7 this noise elimination system adds 30dB to the already high S/N and over 10dB of headroom to give you master-quality recordings.
If your audio perception is critical, your listening standards high, audition an X-Series recorder. The performance is flawless. The sound peerless.
TEAC
dbx is a trademark of dbx. Inc
1979 TEAC Corporation of America
7733 Telegraph Road. Montebello, CA 90640
In Canada TEAC: distributed by White Electronic Development Corporation (1966) Ltd
INVEST IN METAL
AKAI's new metal decks with Super GX (tm) Heads significantly improve specs with all tape formulations.
Once in a great while, some truly important advancements in tape recording technology are introduced.
Metal tape is one of them. AKAI's new Super GX Head is another.
Found exclusively on all new AKAI metal-capability cassette decks, Super GX Heads reproduce unsurpassed, crisp sensitive sound.
Guaranteed* for 150,000 hours, Super GX Heads improve frequency response by up to 2,000 Hz, signal-to-noise ratio as much as 6 dB and expand dynamic range, as well. With even, tape formulation you use.
With a head this impressive, we had to design a full complement of metal decks to match. The GX-F90 is our top-of-the-line, loaded-with-feature' edition. With the 3-head performance of our Super GX Combo Head, High Current Erase Head to accommodate metal tape, 'limited warranty" Dolby Labs. Inc.
Instant Program Location System, Dual Process Dolby two-color fluorescent bar meters, tape/source monitoring, fine bias adjustment, mic/line mixing, memory rewind and auto-repeat, just to name a few. And take a look at these specs:
Frequency Response: 25-21,000 Hz ( ± 3 dB using metal tape), S/N Ratio 72 dB (Dolby on) at metal position, Wow/Flutter less than 0.03% WRMS.
The other three new decks share many of the same outstanding specs and features. But no matter which one you choose, you can feel confident that dollar-fer-dollar, spec-for-spec, you've made a sound investment you'll want to live with for a long time.
See for yourself at vote AKAI dealer. or write: AKAI, P.O. Box 6010, Compton, CA 90224; in Canada, AKAI AUDIO VIDEO CAN ADA, 2776 East Broadway, Vancouver, B.C., Canada V5M 1Y8.
AKAI You never heard it so good.
GM DELCO
Simulated LED readout Been misled into thinking that you're limited when it comes to factory-engineered auto sound systems? Well look again! Delco-GM has the sophisticated, high-technology receivers, tape players, speakers and equalizer/boosters that can take you right to your limits in auto sound.
The Delco-GM ETR electronically tuned receiver--available on selected GM models-features Keyed Automatic Gain Control, Quadrature Detection, Phase Locked-Loop Stereo Decoder, Audio Processing, Impulse Noise Blanking and a Frequency Synthesized Tuner.
Delco-GM circuitry handles adjustments on the inside. Automatically. It eliminates the need for things like separate local-distant or stereo-mono switches.
With Delco-GM, you get sound. Not switches.
Wont to hear more? Try Delco Sound'!" dual-cone extended range speakers for improved high-fidelity performance. And the Delco-GM Graphic Equalizer/Booster, which doubles the power output of our receivers.
Delco-GM has more than 40 years' experience in designing sound systems-hat move. We know there's a lot more to it than putting home hi-fi on wheels.
So if you're ready to take it to the limit, see your Chevy, Pontiac, Buick, Oldsmobile, Cadillac or GMC dealer and hear all of the sound Delco-GM has to offer.
Delco-GM Sound. A moving experience.
Delco
Why Yamaha speakers sound better than all the others.
Even before you hear them.
To make a speaker that produces accurate sound is not simple. It requires painstaking attention to detail, precise craftsmanship, and advanced technology.
And that's where Yamaha comes in. We build all our speakers with the utmost precision in every detail.
As the premier examples of Yamaha loudspeaker craftsmanship, read what goes into the two speakers shown, the NS-69011 and the NS-1000M. Then you'll understand why Yamaha loudspeakers sound better.
Even before you hear them.
Precision Yamaha crafted cabinetry
(1) The walls on these, and all Yamaha speaker cabinets, are sturdily braced and cross-braced at every possible stress point.
(2) The corner seam craftsmanship is so fine that it looks like the cabinet is made from one continuous piece of wood.
The back panels on these speakers are flush-mounted for maximum air volume within the cabinet.
(3) Inside, a 3/4" felt lining "decouples" the cabinet from the drivers to achieve acoustic isolation of the woofer from the cabinet.
(4) Thick glass-wool also aids in damping the woofer for maximum performance.
Lift one of these Yamaha speakers. It's uncommonly heavy and sturdy.
(5) We even glue and screw the woofer cutout from the baffle to the inside rear panel for greater cabinet rigidity.
Now knock on the cabinet. It will sound as solid and substantial as it is.
Precision Yamaha Drivers
(6) The drivers are mounted on computer-cut baffle boards with exacting, critical tolerances to insure precision fit. All Yamaha speakers are acoustic suspension design, and this precise fit is critical for an airtight seal and optimum woofer recovery.
The drivers on these, and all Yamaha speakers, are flush-mounted on the baffle board to avoid un wanted diffraction of the sound waves.
(7) This is especially important because all our tweeters and mid-high range drivers are the maximum-dispersion dome type for the most natural reproduction of voice and instruments.
(8) We use chrome-plated machine screws (rather than wood screws) with two washers (regular and lock) to insure an unyielding mounting.
(9) The speaker frames shown are die cast rather than stamped. That's so they won't twist and alter the voice coil alignment during assembly and use. Other Precision extras- All terminals are quick connect, screw-mounted assemblies.
(10) The wire leads are carefully soldered, not clipped.
All our speakers use full LRC crossover networks.
These crossover networks are among the most advanced available.
NS-69011, NS-1000M
Precision that stands alone--There's more.
Much more. But, there is another fact of Yamaha loud speaker construction that simply stands alone in the industry. Each component used in the two Yamaha speakers shown is manufactured by Yamaha. From the hefty die-cast speaker frames to the unique, ultra-low mass beryllium dome diaphragm.
That's a statement no other manufacturer can make.
And therein lies Yamaha's story. If we put this much care and craftsmanship into the making of our components and cabinet structures, then imagine the care, precision and craftsmanship that go into the quality of the final sound. A sound built upon Yamaha's unique 98-year heritage as the world's largest and most meticulous manufacturer of musical instruments. From our most economical loudspeaker to our top-of-the-line models shown here, Yamaha retains the same attention to detail and craftsmanship.
Look before you listen. You'll be convinced that Yamaha loudspeakers sound better than the rest.
Even before you turn them on. Then ask for a personal demonstration of these and other Yamaha loudspeakers at your Yamaha Audio Specialty Dealer, listed in the Yellow Pages.
Or write us: Yamaha, Audio Div., P.O. Box 6600, Buena Park, CA 90622.
TDK's new improvement has nothing to do with the sound.
It's the package.
Each TDK package is now designed to catch your eye as never before. Clean, modern lines.
Bright new colors. Bolder designations in front. Full tape description in back, including sound characteristics, formulation, bias and a frequency response chart to let you know precisely what you're buying without having to hunt for a salesman.
And don't expect the improvements to stop there. Inside there are complete recording and cassette care tips. Invaluable for preserving the life of each cassette, even though each TDK cassette is protected by a full lifetime warranty. There's also a convenient, tear-out index card to help you build a perfect reference system.
Once inside, TDK couldn't stop improving. There's now a wider cassette window.
1980. TDK Electronics Corp., Garden City, New York 11530.
Through i you'll be able to watch two red double hub clamps registering tape direction as they turn. Just when the improvements seem to end, TDK tape technology begins. TDK SAs cobalt adsorbed gamma ferric formulation continues to set the nigh bias standard around the world TDK AD, the tape with the hot high end, is now Acoustic Dynamic. You'll see it in brand new blue and silver colors. , another member of TDK's dynamic series, makes many premium normal bias cassettes sound ordinary and overpriced.
That's all we have to report for now. But there will be more to come. Part of TDK's philosophy is: when every improvement has been made, improve again.
Supplier to the U.S. Olympic Team.
The machine for your machine In the unlikely event that any TDK cassette ever fails to perform due to a defect in materials or workmanship, simply return it to your local dealer or to TDK for a free replacement.
A LOT OF PEOPLE TALK ABOUT TRACKING ANGLE DISTORTION.
THE NEW INTEGRA DOES SOMETHING ABOUT IT.
A-D-C--A BSR COMPANY
JBL'S NEW L150:
ITS BOTTOM PUTS IT ON TOP
JBL's new L150 takes you deeper into the low frequencies of music without taking you deeper into your budget.
This short-tower, floor-standing loudspeaker system produces bass with depth, power and transparency that comes incredibly close to a live performance.
A completely new 12" driver was created for the L150. It has an innovative magnetic assembly, the result of years of research at JBL. It uses a stiff, heavy cone that's been coated with an exclusive damping formulation for optimum mass and density.
And it has an unusually large 3" voice coil, which aids the L150's efficiency and its ability to respond to transients (peaks, climaxes and sudden spurts) in music.
There's even more to the L150's bottom--a 12" passive radiator. It looks like a driver but it's not. We use it to replace a large volume of air and contribute to the production of true, deep bass. Bass without boom.
If you're impressed with the L150's lows, you'll be equally impressed with its highs and mids.
Its powerful 1" high–frequency dome radiator provides wide dispersion throughout its range. And a 5" midrange transducer handles high volume levels without distorting.
The maximum power recommended is 300 watts per channel.
The L150's other attributes include typical JBL accuracy--the kind that recording professionals rely on. Maximum power/flat frequency response. High efficiency. And extraordinary time/ phase accuracy.
Before you believe that you can't afford a floor system, listen to an L150. While its bottom is tops, its price isn't.
James B. Lansing Sound, Inc., 8500 Balboa Boulevard, Northridge, CA 91329.
JBL--FIRST WITH THE PROS.
JENSEN SOUND LABORATORIES
AN ESMARK COMPANY
And here's why.
The Jensen R430 AM/FM Stereo/Cassette Car Stereo Receiver is our top-of-the-line.
Our best. And for a lot of very good reasons.
Its functions.
Advanced functions that really make a difference in your music.
Functions like Dolby's Noise Reduction for clearer reproduction of Dolby-encoded cassettes and FM broadcasts.
And a function like Loud ness Compensation of +6dB at 100 Hz to improve bass at low volumes.
Interstation FM Muting lets you tune out annoying be tween-station noise when tuning. While an FM Local/Distant switch allows you to optimize the receiver's sensitivity for strong or weak signals.
The R430 even offers separate bass and treble controls.
Bi-Amplification.
It's a function worth knowing about. Because of the real difference it can make in your music.
The Bi-Amplification function of the Jensen R430 uses a low level passive crossover to split the audio signal into low-and high-frequency bands. The low frequency signals are then sent to one set of amps. And the high signals are sent to an other set of amps.
From these amps, the high signals are fed to one set of speakers.
And the low signals are routed to an other set of speakers. A much more effective use of power.
But what does bi-amplification mean? It means the R430 will provide lower distortion... and higher listening levels... with a given power input. No small feat.
It gives you a second, completely different way of listening to your music. With the option right at your fingertip.
A separate power amp.
Actually four OTL amps;
two for each channel. This trunk-mounted unit accompanies the R430 to deliver a Continuous Average Power Output of 30 watts per channel.
Plenty of low-distortion power,
excellent heat dissipation, an ideally suited component to handle the R430's bi-amp mode.
More features.
Electronic feather-touch switches command a whole array of functions.
LED indicators glow when they're engaged.
And a unique Automatic Tape Alarm helps prevent damage that causes wow and flutter. If a cassette remains engaged when the ignition is turned off, lights flash and speakers beep, reminding you to remove it.
Respectable specs.
Great sounding music is the result of great specs. And with specs like the R430's you--can imagine why we're so proud of its sound.
Total Harmonic Distortion is 0.4% at 52 watts; 1-kHz.
The Frequency Response measures out at 30 to 18,000 Hz (-3dB).
And the Weighted FM Signal/ Noise Ratio (less Dolby) is 68dB.
Is it any wonder why we say the 8430 Receiver is our best?
For less than $400 Audiovox can put the sound of home stereo in your car.
With four power-coordinated components that will "charge" your car with 30 watts per channel.
The COSC-5A. The incredibly slim (just PA" deep) coaxial speaker system that fits practically anywhere, in imported and domestic cars! Shallow 1 1/4" design- special shallow depth provides easy installation in all door panels unable to accept bulkier coaxial speakers. 5" Woofer-Air-suspension design to allow free cone response. Produces deep Bass at extremely high input power levels. Special 1" heat-proof voice coil allows sustained operation at high power without voice coil distortion.
1" Tweeter-with TDK Summarium cobalt magnet, usually found only in costly home speaker systems.
Provides unmatched high-frequency response combined with a wide-dispersion capability.
The AMP-600B. To make the sound fit the internal size and shape of your car with 30 watts per channel to boot. An impressive way to turn ordinary stereo into true hi-fidelity Super Power. It produces unbelievable power . . . up to a maximum of 60 watts RMS stereo output . . . with slide bar control of the entire audio reproduction range. You control the response from Bass through Treble, a total of five ranges, customizing the audio to your enjoyment and to the size and shape of your car.
The Tryvox 30. A 3-way stereo speaker system built around 9/4" woofer, 21/4" mid-range and 1" horn tweeter speakers mounted on Vs" particle board like quality home hi-fi speakers to give better baffling and solid bass response.
The Woofer--giant 20 ounce magnet combined with flex-edge air-suspension and a high temperature 1" voice coil for rich bass at maximum power.
The Mid-Range--A powerful ferrite magnet drives this incredibly responsive mid-range featuring a mylar dome and extra heavy cone for crisp audio.
The Tweeter--A full dispersion, wide angle short horn tweeter that captures all the highs and delivers them to you as brilliantly as the original recording.
A The ID-625. Just about everything you'd find 1 in an in-home tuner/cassette deck plus auto-reverse. The Tuner: A super sensitive AM/FM/MPX radio with a local/distant switch for optimum FM reception; great FM stereo separation plus automatic frequency control.
The Cassette Player: Featuring auto-reverse and tape direction indicator light, 4 speaker outputs and 4-way sound balancing controls.
For further information, write to: Robert Harris, Technical Director, Dept. 12L, Audiovox, 150 Marcus Blvd., Hauppauge, New York 11787.
Audiovox autosound systems are designed and developed by the audio research laboratories of Shintoist Co., Ltd., Yokohama, japan. 1980 Audiovox Corporation.
The Watts Parastat
In 15 seconds your records are clean, dry and ready to play.
With some systems you pour liquid on your records land rub it into the grooves), while with others you brush the dirt around (and rub it into the grooves).
The Watts Parastat is neither of these.
By placing a plush velvet pad on either side of a soft nylon brush and adding a drop or two of Parastatik fluid, a remarkably efficient system is created.
The brush bristles lift the rubbish to the surface. The pads collect and re move it. And the Parastatik fluid sup plies just the right degree of humidity to relax dust collecting static without leaving any kind of film or deposit behind.
No other system does so much for your records in so little time.
So when you want The Best, ask for the original. The Parastat, by Cecil Watts.
Watts products are distributed exclusively in the U.S. by: Empire Scientific Corp.. Garden City, NY 11530.
Revox B760.
One touch tunes it.
Perfectly.
Now there's a tuner that works as accurately as a radio transmitter and as easily as a car radio.
You can tune the B760 manually in increments of 25 or 50kHz, or program up t 3 15 stations in memory for instant selection.
Just touch a button for the station you want, and in less than a second the muting light goes off and the digital readouts and tuning meters confirm your station selection.
Both memory and manual tuning are con trolled by an advanced digital-frequency synthesizing circuit with a differential phase-locked loop that compares the out put of the master oscillator with a quartz crystal reference frequency. If there's any difference, corrections are made instantaneously, maintaining an accuracy of ±0.005%. (That's better than many radio stations can achieve!) The B760's CMOS memory is so sophisticated that it can automatically direct an antenna rotator toward each memorized station, and even has a battery pack to protect the memory if you unplug the tuner or lose AC power.
Other features include an optional plug-in Dolby circuit beard, oscilloscope outputs to help you minimize multipath distortion, selectable 25, 50 or 75 microsecond FM de-emphasis, adjustable-threshold interstation muting, a headphone jack with level control and a high-blend switch to optimize reception of distant stations.
It's all put together with attention to detail and durability for which the Studer Revox company is so well known. With things like plug-in circuit boards, RF shields plated to resist oxidation and even a coaxial delay line to maintain proper phase, everything is made just a bit better than it has to be.
Because we want everything to be perfect.
Studer Revox America, Inc., 1819 Broadway, Nashville, TN. 37203 (615) 329-9576
Offices: Los Angeles (213) 780-4234 New York (212) 255-4462 In Canada: Studer Revox Canada, Ltd.
REVOX
fact: five new Shure Cartridges feature the technological breakthroughs of the V15 Type IV; the M97 Era IV Series phono cartridges Plus Unprecedented stylus protection MIS
Shure has written a new chapter in the history of affordable hi-fi by making the space-age technological breakthroughs of the incomparable V15 Type IV available in a complete line of high-performance, moderately-priced cartridges: the M97 Era IV Series Phono Cartridges, available with five different interchangeable stylus configurations to fit every system and every budget.
The critically acclaimed V15 Type IV is the cartridge that astonished audiophiles with such vanguard features as the Dynamic Stabilizer-which simultaneously overcomes record-warp caused problems, provides electrostatic neutralization of the record surface, and effectively removes dust and lint from the record-and, the unique telescoped stylus assembly which results in lower effective stylus mass and dramatically improved trackability.
Each of these features . . and more... has been incorporated in the five cartridges in the M97 Series-there is even an M97 cartridge that offers the low distortion Hyperelliptical stylus! What's more, every M97 cartridge features a unique lateral deflection assembly, called the SIDE-GUARD, which responds to side thrusts on the stylus by withdrawing the entire stylus shank and tip safely into the stylus housing before it can bend.
NEW! M97 Series Era IV Phono Cartridges...
Five new Invitations to the new era in hi-fi.
Shure Brothers Inc., 222 Harvey Ave., Evanston, IL 60204
In Canada: A. C. Simmonds & Sons Limited Outside the U.S. or Canada, write to Shure Brothers Inc., Attn: Dept. J6 for information on your local Shure distributor.
Manufacturers of high fidelity components, microphones, sound systems and related circuitry.
ESS Heil Wins Again
Comparative tests continue: students at Georgia Tech judge ESS speakers superior to JBL, Bose, Cerwin Vega, Pioneer, AR, Advent, and Infinity.
In the third of a series of blind listening tests, over 650 students at Georgia Institute of Technology judged ESS loudspeakers superior in overall performance to other top speaker brands. In previous tests, hundreds of students at U.C.L. A. and the University of Wisconsin at Madison had also judged ESS best in clarity, accuracy and freedom from distortion.
The controlled direct com parison tests, conducted under the supervision of an independent national testing laboratory, were designed to simulate home listening conditions. Loudness differences were electronically equalized and all speakers were positioned for optimal performance.
The students listened in groups of 30 or less to the same musical material played on each of the speakers in head on comparisons, without knowledge of speaker brand or model. They were then asked to choose the best sounding speaker. At U.C.
L.A. and Wisconsin, the students chose ESS in 13 out of 14 comparisons, while at Georgia Tech ESS was chosen amazingly in 24 out of 24 com parison situations.
In all three tests, as the graph shows, ESS speakers were compared to and often chosen over far more expensive name brand models.
ESS technicians are calling the Georgia Tech demonstration "... our most complete victory. We used 19 different sets of speakers in the Georgia Tech comparisons, as com pared to 11 at Wisconsin and 10 at U.C.L.A.- yet at Georgia Tech we won every com parison." ESS's superiority is due to the exceptional performance of the Heil air-motion trans former midrange/tweeter.
This unconventional driver was invented by Dr. Oskar Heil (creator of the FET) and is licensed exclusively to ESS. It employs a pleat-folded diaphragm that squeezes air like a bellows rather than pushing it.
The squeezing motion in creases the air velocity 430% giving the Heil virtually "instant acceleration" for degrees of clarity, accuracy and spaciousness unattainable with conventional drivers.
Complete details of all three tests should be available at your local ESS dealer in the near future. But don't wait for the results, visit your dealer now. Take the ESS Listening Test for yourself. You'll appreciate the difference.
Take the ESS Listening Test yourself! sound as dear as right .
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(High Fidelity, Apr 1980)
Also see:
Predictable Crises in Classical Music Recording, by Allan Kozinn