JBL L60T loudspeakers

 

JBL's technical expertise and sonic accuracy makes JBL loudspeakers the choice of audio professionals around the world

Recording engineers depend on their studio monitor loudspeakers for accurate sound reproduction. Motion picture sound advancements require even more rugged, wide range theater speakers. Concert halls need superior sound reinforcement systems for proper amplification. Rock concerts must have sound systems that can maintain fidelity at enormous volume levels for hours on end.

In all of these applications, JBL loudspeaker systems are the choice of the professionals. They're the choice of major recording companies including Warner brothers, Capitol and EMI in addition to nearly seventy percent of the recording studios worldwide. They're the choice of renowned concert halls such as Lincoln Center's Avery Fisher Hall in New York, etc.. They're the choice of state-of-the-art. Motion picture theaters throughout the country. They're the choice of superstar rock artists while touring. And they're the choice of such major rock events as Cal jam II, where JBL loudspeakers supplied the sound for over 300,000 listeners, and Live Aid in America, which gathered the largest rock audience in history.

Every speaker in the "L" series - L100T, L80T, L60T and L20T - has a direct twin in the JBL studio monitor line. For the first time the intended original dynamic range, extended frequency response and recreation of the full sound stage is available for home use. For the first time ever, the same speakers that producers and engineers use to mix their recordings sets the stage in the home environment. JBL, bringing professional sound all the way home.

The L60T provides professional sound in the home environment. The elegant two-way, floor standing system, with 8-inch low frequency transducer, teams JBLs renowned titanium high frequency transducer (O35Ti) with a laminated high polymer cone mid/low frequency trasducer. The result is a sensitivity of 88 dB at 1 Watt/1 meter, a continuous power rating of 120 Watts, and a dynamic power rating of 480 Watts (peak IEC shaped noise). The all-wood vener L60T provides extended bass response at high power levels for startling realism.

 

 

Specifications

Type:  2-Way System

Drivers

LF :  8" Polymer Laminate Low Frequency Transducer

HF :  1" High Frequency Transducer with pure Titanium Diaphragm

Sensitivity:  88 dB SPL 2,83 Volts at 1 meter

Frequency Response:  -6 dB at 35 Hz and 27 kHz, +2,5 dB from 45 Hz to 20 kHz

Crossover:  2,5 kHz

Power Handling:  120 Watts continuous, 480 Watta Peak IEC Shaped Noise

Dimensions (W x H x D):  305 x 775 x 245 mm (12" x 30-1/2" x 10")

Weight Shipping:  18,2 kg (40 lbs)/ Each

JBL L20T loudspeakers

The JBL philosophy goes back to 1929, when James B. Lansing began building small loudspeakers for radios and phonographs. A new challenge soon interested him; Loudspeakers for movie theatres. "Talkies" had come of age and there was a need for loudspeakers that could fill the large movie houses with high quality sound. Lansing perfected techniques for milling flat wire and winding it on edge for superior voice coils. He also made vital contributions to compression driver technology, and many of this designs were forerunners of today's production models.

But even more important than any single advancement in technology, James B. Lansing established an approach that guides JBL to this day; Uncompromised engineering and manufacturing to deliver the best loudspeaker systems possible.

 

 

The L20T compact monitor, a two-way bookshelf system with a 6-1/2" low frequency transducer, offers extended frequency response, original dynamic range, and the reproduction of the full sound stage in the home. The L20T features JBL's acclaimed 1-inch titanium high frequency transducer (O35Ti) and polypropylene mid/low frequency transducer to deliver sound as it was intended to be heard. The sensitivity is 87 dB at 1 Watt/1 meter, and has continuous power rating of 100 Watts and dynamic power rating of 4-- Watts (peak IEC shaped noise). The L20T performance previously unavailable in such a small package.

 

 

Specifications

Type:  2-Way System

Drivers

LF :  6-1/2" Filled Polypropylene Low Frequency Transducer

HF :  1" High Frequency Transducer with pure Titanium Diaphragm

Sensitivity:  87 dB SPL 2,83 Volts at 1 meter

Frequency Response:  -6 dB at 45 Hz and 27 kHz, =2,5 dB from 50 Hz to 20 kHz

Crossover:  3 kHz

Power Handling:  100 Watts continuous, 400 Watta Peak IEC Shaped Noise

Dimensions (W x H x D):  241 x 378 x 235 mm (9-1/2" x 14-7/8" x 9-1/4")

Weight Shipping:  17,3 kg (38 lbs) pair

 

Sansui FR-Q5 turntable

Sansui Computerized Full-Automatic Direct-Drive Quartz-Servo Turntable with D-O-B Tonearm

Silicon Dioxide (Quartz) Oscillator: A ready reference for dynamic response.

Most audiophiles are familiar with the use of reference oscillators in servosystems which help keep platter speeds accurate in direct-drive turntables. In the case of the FR-Q5 we have employed the most trustworthy of all-an energized silver of silicon dioxide (quartz crystal) which is entirely impervious to all conceivable variables such as changes in power-line frequency and voltage and in external/internal fluctuations in temperature and humidity.

The speed of the platter is detected and compared against the quartz reference signal via a PLL (Phase-Locked Loop) circuit contained in reliable ICs; variations in load, such as the drag caused when the stylus tracks a highly modulated groove, are instantly caught and corrected to result in outstanding dynamic response. Speed accuracy is just about as close to absolute as you can ever expect to come drift is never more than ±0,002%.

 

Magnetic-Pattern Detection: The correction is faster than the eye.

Sansui's all-new magnetic pattern detection system, generating as many as 960 pulses per each rotation of the platter, makes it possible to correct any speed deviation via the quartz/PLL servo in less than the blink of an eye.

Along the inside rim of the platter is a pattern of 960 magnetic poles; fixed beneath the platter is a stationary magnetic head - somewhat like the playback head on a tape deck - which senses the changing polarity of the revolving pattern and sends a "report" to the servo. If there are more (or fewer) pulses than there should be, the phase-comparison stage of the servo detects them and the controlling stage converts them to correctional information, slowing down (or speeding up) the direct-drive motor.

 

Instantaneous Rise & Electronic Brake: Absolutely no overshoot or undershoot.

Almost before you can remove your finger from the Start/Stop button - as rotation it is moving at the selected speed without any overshoot or undershoot. Additionally, when you change from 45 rpm to 33-⅓ rpm, or when you tell the platter to stop the built-in electronic brake comes into play for fast, accurate results.

 

Brushless Direct-Drive Motor: impeccable performance from high-precision parts.

In our special design we have employed the DC brushless, saturable-core system with a rotor-position sensor. It responds quickly and accurately to the control information it receives from the quartz/PLL servo. To reduce friction and wear, the motor shaft is made of special hard stainless steel and polished to a mirror finish in a "centerless" polishing technique to achieve an overall roundness never more than 0,2 µ from absolute. And for the thrust bearing, itself of a special low-wear nylon compound, we have used a newly-developed aerospace-grade lubricant.

 

Manual Operation: Just touch the tonearm

There is no switch on the Sansui FR-Q5 to defeat the full automatic operation. If you wish to use the tonearm manually, simply lift it up with the fingerpiece on the headshell; the built-in "computer" and its optical sensors will detect your touch and put the full automatic system on standby while you select another track on your record or return the arm to its rest.

 

D-O-B Tonearm: A novel theory put to practical use for purer sound.

After many long years of experimentation and experience, Sansui has developed what just may be the world's most accurate tonearm. In our patent-pending "Dyna-Optimum-Balanced) arm the dynamic fulcrum is placed precisely on the point or node of vibration. Because of this the arm exhibits very high stability and its counterweight, headshell and support components show almost none of the microscopic wobbling vibrations which, in other arms, cause still more mutual resonance and pass it on the stylus. In short, our D-O-B suffers none of the compound resonance which prevent accurate tracking and give rise to frequency modulation to "muddy" musical reproduction.

 

Computerized Tonearm - A technological First

A kind of electronic "brain" assisted by a team of optical sensors, controls the operation of the fully automatic tonearm on the Sansui FR-Q5 turntable with unprecedented accuracy. It monitors the moment-to-moment position of the arm, oversees the functions of the separate motor which lifts and returns the arm when required, and even memorizes action sequences.

Some people would call this a "computerized" system, and they wouldn't be far wrong. Actually, it makes use of a CPU (Central Processing Unit) which is contained in an LSI (Largo-Scale IC). Therefore, its reliability and precision cannot be bettered.

 

Quick and accurate response without compromise

Having developed one of the world's most sensitive tonearms for the FR-Q5, Sansui engineers weren't about to compromise that sensitivity by using an ordinary mechanically-linked full-auto system. Thanks to the CPU "brain" the arm remains entirely free during play, when the record ends, or if you touch the Start/Stop button at any time, the CPU sends a command to lift the arm and return it to its rest gently and quickly.

 

Fully protected against all conceivable mishaps

That's quite a promise - that this system is entirely accident proof. But it's true. The CPU permits the incorporation of a "fail-safe" system which gives total protection to the arm and its motor, its cartridge stylus, and your records.

If, for instance, you forget to unlock the tonearm clip before you touch the Start/Stop button, the CPU instantly countermands the start order and shuts off the arm motor before damage can occur.

 

Light-touch switches make full control easy.

All control switches on the FR-Q5 are short-stroke types requiring only the slightest finger pressure for positive operation.

After powering on the turntable, select speed and record size, place your record on the platter and touch the Start/Stop button; the CPU "brain" orders the arm up and over the opening track, then lets it fall slowly to the beginning groove. When the record ends, the optical sensor for lead-out informs the "brain" which immediately orders the arm's return. The turntable is then shut off automatically, unless you have also pushed the Repeat button, in which case the lead-in, play and return process will continue until you order it to stop, again with a light touch on the Start/Stop button.

 

The independent tonearm motor "remembers" the first noe.

As we have mentioned, there is a second motor in the Sansui FR-Q5, independent from the direct-drive platter motor, used exclusively to lift, cue, and return the tonearm. Its computerized operation is controlled electronically but it employs a mechanical damping system to ensure that the stylus is lowered to the very beginning of the lead-in groove every time when you cue a record.

 

Specifications

Type:  Two-speed, computerized fully automatic quartz servo direct drive turntable

Motor:  20-pole, 30-slot DC brushless

Drive System:  Direct spindle drive electronically servo controlled

Platter:  aluminum alloy die-cast

Diameter:  300 mm (11-13/16")

Weight:  1,3 kg (2,86 lbs)

Wow and Flutter:  less than 0,018%

Signal-to-Noise Ratio: better than 75 dB (DIN-B)

Build-Up Time and Arc Angle:  within 1,8 sec (150°)

Platter Speed Deviation:  ±0,002% (Quartz -Servo ON)

Temperature Coefficient: less than 0,00003% / °C (Quartz-Servo ON)

Load Characteristics:  0% (Quartz-Servo On)

Platter Speeds:  33-⅓ and 45 rpm

Tonearm:  Statically- balanced S-shaped D-O-B tonearm with two point pivot support

Length :  220 mm (18-11/16") pivot to stylus

Overhang:  17,5 mm (3/4")

Offset Angle:  24,5°

Minimum Tracking Force Setting:  0,5 g (when using cartridge guaranteed to operate at 0,5 g stylus pressure)

Acceptable Cartridge Weight:  4 to 10 g

Cabinetry:  Slim -line cabinet with anti-howling insulators and hinged free-stop dust cover

Cartridge:  S.C.-50

Type:  Intermodulation DIstortion Type

Frequency Response:  10 to 20,000 Hz

Output Voltage:  3 mV per channel (1,000 Hz , 35,4 mm /sec)

Optimum Load:  47 k Ω

Tracking Force:  2,5 ±0,4 g

Stylus:  0,6 mil diamond spherical (SN-50)

Power Requirements:  100, 120, 220, 240 V 50/60 Hz

Power Consumption:  10 watts

Dimensions (W x H x D):  440 x 133 x 385 mm (17-5/16" x 5-1/4" x 15-3/16")

Weight: 6,9 kg (15,1 lbs) net

 

Sansui FR-D3 turntable

Sansui Direct-Drive Turntable Automatic-Return/Shutoff

 

Emphasis on extremely accurate platter speed and long-life reliability is a Sansui hallmark in all our turntables; Sansui uses much the same high-technology drive designs in all models, whatever the price. In the case of the FR-D3 with automatic return/shutoff the drive is direct, offering a phenomenally low wow/flutter of only 0,028% (WRMS) and a very high Signal-to-Noise Ratio of 72 dB. For convenience, we've gone beyond the basics to create a tonearm return system that causes absolutely no drag on the tonearm during play.

For good looks, the Sansui designers have retained the slim profile and uncluttered lines you'll find in turntables costing much. Much more/ hear the FR-D3 in action at any audio showroom offering the best from Sansui where it's all hi-fi.

 

High-Torque Saturable-Core Motor - The specs are spectacular

Sansui patents are now pending on this unique and highly effective motor. It is basically a so-called "brushless" design, eliminating physical switching to offer virtually noiseless operation at all times.

We use the time-tested pole/slot technique. But with more poles and slots than usual. This provides higher torque generation, smoother rotation and higher speed accuracy. As mentioned, the specifications achieved are spectacular: 0,028% (or less) wow and flutter (WRMS) and an excellent 72 dB Signal-to-Noise Ratio.

 

Material/Matching: Patience equals precision when it comes to making the motor.

Super-hard carbon chrome steel is used for the motor shaft in the Sansui FR-D3. this high-quality material - one of the hardest known to man - is mirror finished to a roundness tolerance of only 0,2 µ or better, then fitted into a mirror-finished thrust sleeve to reduce friction.

The entire assembly then rides on a disulphide-mixed nylon thrust bearing and is constantly bathed in a special lubricant developed for the aerospace industry. All parts are machined to match with very high precision - your assurance - that the original performance specifications will be available over years and years of operation.

 

Smooth & Automatic: Tonearm return system is a convenience you can't refuse.

Sansui has perfected a tonearm return system that does not rely on crude mechanical linkages; the tonearm is entirely free to track the record during play and its sensitivity is never compromised.

Simply set your record on the platter, cue the tonearm over the selected band and operate the Cue lever, tonearm descends and play begins. When the lead-out groove is reached and the tonearm begins to accelerate, the auto return system is triggered, the tonearm is lifted and returned gently to its rest, and power is automatically shut off. You never need touch the tonearm.

 

Trackability: A gram or so is all you need

Proof of the high sensitivity in the tonearm is in its ability to track even the most heavily-modulated record grooves with about a one gram stylus pressure. But at at whatever setting, the support with its 52 super-hard steel bearings (five each for the two horizontal pivots plus 21 each for the two verticals) performs faultlessly, freeing the arm from undue friction in all directions.

 

Lightweight Arm: Worth its weight in gold.

Inside the "S" shaped tubing of the FR-D3's tonearm is acoustic absorbent (pet.pend.), at the "tail" is a resin weight shaft, dynamically de-coupled from the arm via a rubber device to further damp resonance. The headshell is no less important. Clean reproduction (without the "mud" caused by headshell resonance) is achieved by casting the unit of low-porosity aluminum in a onepiece unit. Two additional features also deserve mention; one is the anti-skating device on the tonearm to prevent unbalanced stereo reproduction and the other is the use of gold-plated connection pins to assure always-clean electrical interface with the cartridge.

 

Pitch is Perfect: strobe and ±3% speed change control

For normal use you'll watch the wideband strobe at the front of the platter, tuning the speed control until the strobe dots appear to be "standing still". When you wish to slow down or speed up the platter, however, the latitude of pitch change is a wide plus/minus three percent, permitting you to tune the musical pitch on your record with your piano, etc.

 

Disc-Hugging Mat: Slips, slurs and resonance are ended for good.

Today's long-playing records are tapered from the center to the edge in a gradient of 1:350. that's barely enough of a "hill" to be seen by the naked eye, but it's more than a small thread to quality sound reproduction if the mat under the record on a turntable assumes it doesn't exist. So, rather than making our mat perfectly flat, we've cupped it on that same 1:350 ratio. It "hugs" your record to prevent slips and slurs, and to cancel any dead space under the record that might cause resonance.

 

Smart & Simple; Stylish cabinet features up-front controls.

All controls on the Sansui FR-D3 except the Cue lever are positioned on the easily-accessible front panel. For the cabinet itself we have chosen a proven "no-how" design, featuring slim, smart looks. The four isolators in the cabinet suspension system end acoustic feedback before it reaches your record.

When mounted on a strudy shelf - or better yet, on a custom-made audio rack from Sansui along with your other Sansui hi-fi components - the FR-D3 makes a fine addition to your listening room both in looks and performance. It's the model that goes beyond the basics to offer accuracy and convenience for a fair and affordable price - from Sansui.

 

Sansui High-Resolution Cartridge

In some areas, the FR-D3 comes complete with a high-resolution Induced Magnet cartridge Sansui SC-50. it offers crisp and solid sound.

 

Specifications

Type:  two-speed direct-drive automatic return

Motor:  20-pole, 30-slot DC brushless

System:  Direct spindle drive electronically servo controlled

Platter:  Aluminum alloy die-cast

Diameter :  300 mm

Weight :  1,1 kg (2,4 lbs)

Speeds:  33-⅓ and 45 rpm

Fine Speed Adjust.:  ±3%

Wow and Flutter:  less than 0,028% WRMS

Signal-to-Noise Ratio:  better than 72 dB DIN-B

Tonearm:  S-shaped damped tonearm with two-point pivot support with gold plated terminals

Length:  220 mm (8-11/18") pivot to stylus tip

Overhang:  17,5 mm (3/4")

Offset Angle:  24,5°

Minimum Tracking Force Setting:  1 g (when using cartridge guaranteed to operate at 1 g stylus pressure)

Acceptable Cartridge Weight:  2 to 10 g

Cartridge:  SC-50

Type:  IM type

Frequency Response:  10 to 20,000 Hz

Output Voltage:  3 mV per channel (1,000 Hz, 35,4 mm/sec)

Optimum Load:  47 k Ω

Tracking Force:  2,5 g ±0,4 g

Stylus:  0,6 mil diamond spherical

Cabinetry:  Slim-line cabinet with fully front controls, anti-howling insulators and hinged free-stop

Dust cover

Power Requirements:  100, 120, 220, 240 V 50/60 Hz

Power Consumption:  5 watts

Dimensions (W x H x D):  440 x 130 x 385 m (17-5/16" x 5-1/8" x 15-3/16")

Weight:  6 kg (13,2 lbs) net

 

Tannoy D900 loudspeakers

 

Definition from Tannoy. The true audiophile technology to convince you.

In nature, all sounds start from a single point, with waves radiating out evenly in every direction. Tannoy’s Dual Concentric™ technology emulates this by placing the tweeter directly behind the bass cone, so again the sound comes from a single point and all frequencies reach your ear simultaneously.

 

D900 Spectacular performance from the flagship Definition model. Enormous power handling capability with astonishing impact and yet capable of portraying all of the subtlety and emotion of music and film sound tracks even at low listening levels.

 

 

Specifications

Recommended Amp. Power :  30 -300 Watts

Peak Watts Power Handling:  450

Sensitivity (2.8 Volts @ 1 metre):  94 dB

Nominal Impedance:  6 ohms

Frequency Response:  28 Hz - 30,000 Hz ±3 dB

Driver Configuration

Cast Chassis Dual Concentric  Drive Unit:  300 mm

Supplementary Cast Chassis Bass Unit:  300 mm

Cabinet

Enclosure Type:  Resistively ported reflex

Dimensions (H x W x D):  1145 x 428 x 464 mm

Weight:  57 kg

Finish:  All Definition models available in American Cherry or Rosewood with Black Jersey weave grille cloth over non diffraction tooled frame

Tannoy D700 loudspeakers

 

D700 Imposing floor standing model for large rooms. The D700 is capable of generating the full scale and impact of live music. Stunning performance when used as the main pair in a high quality home theatre system.

 

Definition speakers are uniquely equipped to succeed, featuring as they do Tannoy’s patented Dual Concentric™ drive unit technology. The rigidity of the die-cast chassis combined with the oversized magnet assembly ensures this drive unit provides reliable, effortless performance.

Not only do the real wood veneer cabinets look great, but the multi-faceted design play their part in enhancing the acoustic performance. Non-parallel side panels help break up standing waves within the cabinet, minimising colouration and interference from panel resonance. Even at high volumes, the result of all this is superb musical dynamics with low distortion and crisp, pinpoint stereo imaging. The musical truth, the whole truth and nothing but the truth.

 

Specifications

Recommended Amp. Power :  30 -200 Watts

Peak Watts Power Handling:  300

Sensitivity (2.8 Volts @ 1 metre):  93 dB

Nominal Impedance:  6 ohms

Frequency Response:  35 Hz - 30,000 Hz ±3 dB

Driver Configuration

Cast Chassis Dual Concentric  Drive Unit:  254 mm

Supplementary Cast Chassis Bass Unit:  254 mm

Cabinet

Enclosure Type:  Resistively ported reflex

Dimensions (H x W x D):  990 x 374 x 367 mm

Weight:  41 kg

Finish:  All Definition models available in American Cherry or Rosewood with Black Jersey weave grille cloth over non diffraction tooled frame

Tannoy D500 loudspeakers

 

D500 To make the most of the modest cabinet proportions, this model employs a double-chamber reflex system for extended and controlled bass. High power handling with impressive accuracy.

 

If one thing defines music, it’s the power it has to move people. The best audio equipment brings that emotion to life in all its shades and subtleties. Using technology direct from the world of professional sound recording and reproduction, Definition speakers deliver the ultimate in dynamic range, stereo precision and detail resolution. Each model has been designed to compliment the very best audiophile electronics.

 

 

Specifications

Recommended Amp. Power :  30 -175 Watts

Peak Watts Power Handling:  265

Sensitivity (2.8 Volts @ 1 metre):  91 dB

Nominal Impedance:  6 ohms

Frequency Response:  40 Hz - 30,000 Hz ±3 dB

Driver Configuration

Cast Chassis Dual Concentric  Drive Unit:  200 mm

Supplementary Cast Chassis Bass Unit:  200 mm

Cabinet

Enclosure Type:  Resistively ported twin chamber coupled reflex

Dimensions (H x W x D):  934 x 314 x 344 mm

Weight:  28 kg

Finish:  All Definition models available in American Cherry or Rosewood with Black Jersey weave grille cloth over non diffraction tooled frame

Tannoy D300 loudspeakers

D300 Slim and elegant floor standing speaker for small to medium sized rooms. Superb stereo imaging from the single 165mm Dual Concentric™ drive unit and deep bass capability, despite its compact size.

 

No-one’s closer to the music

Pick any of the world’s most famous music recordings or movie soundtracks and the chances are that Tannoy played a part. That’s because, from day one, more recording studios in Europe and the USA have chosen Tannoy monitors than any other.

When it really matters, artists and recording professionals have always known they can trust Tannoy to deliver a sound that gets as close to the essence of the performance as possible. It’s this kind of dedication to sound integrity that Tannoy designs and engineers into every speaker carrying their name.

 

Specifications

Recommended Amp. Power :  30 -120 Watts

Peak Watts Power Handling:  200

Sensitivity (2.8 Volts @ 1 metre):  88,5 dB

Nominal Impedance:  6 ohms

Frequency Response:  42 Hz - 30,000 Hz ±3 dB

Driver Configuration

Cast Chassis Dual Concentric  Drive Unit:  165 mm

Supplementary Cast Chassis Bass Unit:  none

Cabinet

Enclosure Type:  Ducted port reflex

Dimensions (H x W x D):  829 x 251 x 239 mm

Weight:  14,5 kg

Finish:  All Definition models available in American Cherry or Rosewood with Black Jersey weave grille cloth over non diffraction tooled frame

Pioneer SX-727 receiver

Upper range power output, unusual FM selectivity and sensitivity and the versatility of units costing much, much more - the SX-727 stereo receiver from Pioneer puts together all of these hi-fi virtues and offers the music enthusiast a new high in stereo valve. verSatility is the keynote of this attractively-designed unit. The SX-727 handles up to two tape decks, two turntables, three pairs of speaker system and a microphone. Its sensitive FM section is loaded with the very latest of solid state circuitry - the better to offer distortion free reception. Its direct-coupled power amplifier circuitry means a wide power bandwidth and superb frequency response. And the unit puts out up to 195 watts of music power (at 4 Ω ), more than enough to fill a large room with great sound. Now available at a price that is as surprising as its many features.

 

Features:

Two tuning meters, a wide linear scale FM -dial

Sensitive FM front-end section

FET equipped FM Muting Circuit

IF section with ceramic filters

FET equipped control amp section

Direct-coupled power amp section

Tape-to-tape duplication

 

Specifications

Power Amplifier Section

Music power Output (IHF):

195 watts at 4 Ω

122 watts at 8 Ω

Continous Power Output (1 kHz, each channel driven)

69 W/69 W at 4 Ω

48 W/48 W at 8 Ω

Continuous Power Output (1 kHz, both channel driven):

50 W +50 W at 4 Ω

40 W + 40 W at 8 Ω

Power Output in the Range of 20 Hz to 20 kHz (both channels driven):  37 W + 37 W ( 8 Ω , T.H.D. less than 0,5%)

Total Harmonic Distortion

Less than 0,5% (Continuous power output)

Less than 0,03% (8 Ω , 24 W/24 W power output)

Intermodulation DIstortion

Less than 0,5% (Continuous power output)

Less than 0,03% (8 Ω , 24 W/24 W power output)

Power Bandwidth (IHF):  10 Hz to 60 kHz (8 Ω , T.H.D. less than 0,5%)

Frequency Response;  7 Hz to 80 kHz, ±1 dB

Input Sensitivty/Impedance:  500 mV/50 k Ω  (1khz, Continuous power output)

Speakers:  4 to 16 Ω

Damping Factor:  40 (8 Ω , 1 kHz)

Preamplifier Section

Output Voltage:  500 mV (Rated output, 4 V Max.)

Total Harmonic Distortion :  less than 0,1%

Frequency Response:  10 Hz to 20 kHz ±1 dB

Input Sensitivity/Impedance (1 kHz, for rated output)

Phono 1 Mag :  3 mV/50 k Ω

Phono 2 mag :  3 mV/50 k Ω

Mic :  2,7 mV/50 k Ω

Aux :  200 mV/100 k Ω

Tape Monitor 1, 2 :  200 mV/100 k Ω

Recording Output

Tape Rec 1, 2 :  200 mV (Pin jack)

Tape Rec (DIN) :  35 mV

Controls:

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Low Filter :  -8 dB / 50 Hz (6 dB/oct.)

High Filter :  -9 dB /10 kHz (6 dB/oct.)

Equalization Curve:  Phono RIAA standard

Loudness Contour:  +10 dB/100 Hz ; +6 dB/10 kHz (with Volume Control set at -40 dB position)

Muting:  -20 dB

Hum and Noise (IHF):

Phono :  better than 85 dB

Aux :  better than 95 dB

FM Tuner Section

Frequency Range:  88 MHz to 108 MHz

Usable Sensitivity (IHF):  1,8 µV

Capture Ratio (IHF):  2,0 dB

Selectivity (IHF):  better than 70 dB

Image Rejection:  better than 85 dB (98 MHz)

IF Rejection:  better than 100 dB (90 MHz)

Spurious Rejection:  better than 90 dB (98 MHz)

AM Suppresion:  50 dB

Signal-to-Noise Ratio :  70 dB

Total Harmonic Distortion :

Mono : less than 0,3% (100 % mod.)

Stereo :  less than 0,5% (100 % mod.)

Tuning Indication:  Signal strength type and Center tuning type

Muting:  switchable to On-Off

Stereo Separation:  better than 40 dB (1 kHz)

Subcarrier Suppression:  better than 50 dB

Antenna Input:  300 Ω  (balanced); 75 Ω  (unbalanced)

AM Tuner Section

Frequency Range:  525 kHz to 1605 kHz

Usable Sensitivity (IHF):  10 µV

Selectivity (IHF):  better than 35 dB

Image Rejection:  better than 80 dB (1,000 kHz)

IF Rejection:  better than 75 dB

Signal-to-Noise Ratio:  better than 50 dB

Antenna:  Built-in ferrite loopstick antenna

Miscellaneous

Semiconductors:  4 FETs: 4ic; 56 Transistors; 37 Diodes

Power Requirements:  110, 120, 130, 220, 240 V 50/60 Hz

Power Consumption:  270 W (max.)

AC Outlets:  Switched 1, Unswitched 2

Dimensions (W x H x D):  485 x 150 x 390 mm (19-1/16" x 5-7/8" x 15-3/8")

Weight: 

Without Package :  14 kg (30 lb 14 oz)

With Package :  17 kg (37 lb 8 oz)

 

Pioneer QX-8000A 4-channel receiver

To compose an ideal 4-channel stereo system, the QX-8000A, a solid state AM/FM stereo receiver, can be combined with four speaker systems, tape decks, turntables, etc. With a 4-channel stereo tape deck or cartridge tape player installed, the QX-8000A can provide a discrete 4-channel playback of programs recorded on tape.

 

4-Channel Reproduction from Matrix 4-Channel Source

The self-contained matrix circuit permits 4-channel reproduction from matrix 4-channel records or FM stereo broadcasts. The mode switch has positions for regular matrix and SQ matrix reproduction, allowing reproduction to take either of these forms.

 

Matrix Reproduction from 2-Channel Source

A 2-channel signal from a record of FM broadcast can be reproduced in 4-channel form via the regular or SQ matrix circuit. In this case, the result is an improvement over ordinary 2-channel stereo reproduction.

 

2-Channel Stereo Performance

Conventional 2-channel stereo performance can be provided through an arrangement or two speaker systems in the front; Ieft-side speaker system and right-side speaker system. A 2-way multi-amplifier system can be set up by installing an electronic crossover network.

 

Features

 

Acoustical field reproduction from 4-channel stereo

The amplifier section consists of four separate channels having excellent frequency response and very low distortion, providing for 4-channel discrete reproduction of a 4- channel source (recorded tape).

 Choice of matrix decoder

The OX-8000A offers a choice of two decoders; the regular matrix and the SO matrix. The source may be a matrix recording or FM broadcast of a matrix recording. The result is realistic 4-channel reproduction.

 Matrix circuit for ordinary 2-channel stereo

Use of the internal matrix circuit enhances the effect of ordinary 2-channel stereo source material, over and above that normally obtainable.

 Also works as standard 2-channel stereo receiver

lf you only have one pair of speakers now, you can use the OX-8000A as a regular 2-channel stereo receiver and add the other two speakers at a later date.

 Permits 4-Channel or 2-Channel tape recording

lf you already own a 2-channel stereo tape deck, you can go on using it for recording and playback as before. However, if you plan to buy a 4-channel tape recorder, you can use fully the discrete 4-channel capabilities, playing back 4-channel pre-recorded tapes with true 4-channel sound.

 Fully equipped with 4-channel Auxiliary controls and inputs

There are three balance controls: front left-right balance, rear left-right balance, and front-rear balance. These give you complete control over the 4-channel sound field. Also, separate stereo headphones for the front and rear channels are provided important when monitoring 4- channel tape recordings. Other features include "speakers in operation" indicator lamps, program indicator lamps, loudness switch, high and low filter switches, FM muting switch, 300Q and 75O (coaxial) FM antenna terminals, and a 4-position channel mode selector.

 Versatile tape-to-tape duplicating facilities

Normal 2-channel tape-to-tape dubbing is possible too, as well as 4-channel tape-to-tape duplicating.

 FET-equipped FM tuner

The FM tuner is equipped with an FET in its front end to improve selectivity and sensitivity. Also, the lF stage employs one hybrid and one monolithic lC, replacing numerous transistors, ceramic filters, etc., and raising the tuner's sensitivity and selectivity. The FM MPX decoder works according to the time switching system and boasts excellent channel separation. Tuning is made easy by the linear FM dial and the double (signal strength and center zero tuning meters.

 Built-in AM ferrite Bar antenna

Sensitive and highly directional. An outdoor AM antenna is not required in most cases.

 Low-distortion High-Power Audio amplifier

Both tone controls and equalization amplifier operate with a generous amount of negative feedback for improved frequency response accuracy and flatness. The power amplifier is a quasi-complementary design, a tried-and-true circuit construction.

 All new 4-Channel exterior design

Cabinet and control panels are visual symbolizations of the Pioneer "4-channel" concept, with a recessed, framed, square tuning dial, a modernistic and logically arranged control panel, and the famous silver-black-wood Pioneer color styling.

 

Specifications

FM Tuner Section

Frequency Range:  88 MHz to 108 MHz

Usable Sensitivity (l HF):  2,2 µV

Capture Ratio (lHF):  3 dB

Selectivity (lHF):  better than 40 dB

lmage Rejection:  better than50 dB (98 MHz)

lF Rejection:  better than 85 dB (98 MHz)

Spurious Rejection:  better than 80 dB (98 MHz)

AM Suppression:  50 dB

Signal to Noise Ratio:  60 dB

Harmonic Distortion: 

Mono :  less than 0,6% (100% modulation)

Stereo :  less than 0,8% (100% modulation)

Tuning lndicator:  Signal Strength type and Center tuning type

Muting:  Switchable to On/Off

Stereo Separation:  better than 40 dB (1 kHz)

Sub Carrier Suppression:  better than 32 dB

Antenna lnput:  300 Ω  (balanced), 75 Ω  (unbalanced)

De-emphasis switch:  75 µs/50 µs (5 line voltage model except SABS-approved model)

AM Tuner Section

Frequency Range:  525 kHz to 1605 kHz

Usable Sensitivity (lHF):  15 µV

Selectivity (lHF):  better than 25 dB

lmage Rejection:  better than 45 dB (1,000 Hz)

lF Rejection:  better than 30 dB

Signal to Noise Ratio:  better than 50 dB

Antenna:  Built-in ferrite loopstick antenna

Power Amplifier Sections

Music Power Output (lHF):

180 W at 4 Ω 

130 W at 8 Ω 

Continuous Power Output:  43 W / 43 W / 43 W / 43 W (at 4 Ω )

1 kHz each channel driven:  30 W / 30 W / 30 W / 30 W (at 8 Ω )

Continuous Power Output:  36 W + 36 W / 36 W + 36 W (4 Ω )

1 kHz 2-channels driven:  27 W + 27 W / 27 W + 27 W (8 Ω )

Continuous Power Output:  4 x 27 W  (4 Ω )

1 kHz 4-channels driven:  4 x 22 W (8 Ω )

Power Output in the range of 2O Hz to 2O kHz(2-channels driven) :  21 W + 21 W (8 Ω , Harmonic  Distortion less than 1%)

Harmonic Distortion: 

Less than 1% (Continuous Power Output)

Less than 0.05% (8 Ω   14 W + 14 W/14 W + 14 W Power Output)

lntermodulation Distortion:  

Less than 1 % (Continuous Power Output)

Less than 0.1% (8 Ω   14 W + 14 W / 14 W + 14 W Power Output)

Power Bandwidth (lHF):  10 Hz to 100 kHz (8 Ω , Harmonic Distortion less than 1%)

Frequency Response:  5 Hz to 100 kHz, ±3 dB

Input Sensitivity/lmpedance (1 k Hz Continuous Power Output):  400 mV/70 k Ω

Speakers:  4 to 16 Ω

Damping Factor:  35 (8 Ω , 1 kHz)

Preamplifier Section

Output Voltage:  400 mV (rated output)

Harmonic Distortion:  less than 0,5%

Frequency Response:  10 Hz to 40 kHz ±3 dB

Input Sensitivity/lmpedance (1 kHz, for rated output)

Phono 1 Mag :  2 mV / 50 k Ω

Phono 2 Mag :  2 mV / 50 k Ω

Mic :  8 mV / 120 k Ω

Aux 1, 2 :  170 mV / 130 k Ω

Tape Monitor 1, 2 :  170 mV / 130 k Ω

Recording Output: Tape Rec :  170 mV (Pin jack)

BASS Control:  -12 dB, +11 dB at 100 Hz

TREBLE Control:  -8,5 dB ; +10,5 dB at 10 k Hz

LOW Filter:  -6,5 dB at 50 Hz (6 dB/oct)

HIGH Filter:  -11,5 dB at 10 kHz (6 dB/oct)

Equalization Curve:  Phono RIAA standard

Loudness Contour:  +11,5 dB / 100 Hz +7 dB / 10 kHz (Volume -40 dB)

Hum and Noise (lHF Short circuit, A Network): 

Phono :  better than 75 dB

Aux :  better than 90 dB

MISCELLANEOUS

Semiconductors:  3 FETs; 2 ICs; 77 Transistors; 33 Diodes

Power Requirements:  110, 120, 130, 220, and 240 V 50/60 Hz

Power Consumption:  250 W (max)

AC Outlets:  1 x switched, 1 x unswitched

Dimensions (W x H x D):  509 x 172 x 377 mm (20" x 6-3/4" x 15-5/8")

Weight Without package:  15,6 kg (34 lb 5 oz)

With package:  18,6 kg (40 lb 15 oz)