Sonab C500

 We were anxious to maintains the quality of our Sonab sound. It required a great deal of research and effort to do  this.  The result  is here, the Sonab C500 HiFi cassette deck.

The new Sonab C500 is constructed in such a way as to make it as simple as possible to handle, to play and above all to record.

 Recording as you may know is the function that requires knowledge as well as facilities. To help you as much as possible we have equipped the Sonab C500 with Dolby B-System noise reduction. Tape selector for standard and chrome tapes, which changes both bias, and equalisataion, quasipeak value recording level meters, mixing facilities between left and right channels plus centre microphone, memory rewind and built in amplifier for headphones, which enables you to monitor the recording at a level acceptable to you.

Specifications

Tape Transport:  Servo controlled D.C. motor Single Capstan

Tape Speed:  4,76 cm/sec  ±1%

Wow and Flutter:  ±0,13% WTD peak

Fast Winding Time:  100 sec. For C60 cassette

Instruments:  two quasi peak reading recording meters

Noise reduction System:  Dolby B

Tape Counter: 3 figures with memory rewind

Heads:  Two hard permalloy (High µ Metal) heads

Tape Selector:  for Standard or Chomium dioxide tape with separate bias and correction characteristics

Bias Frequency:  105 kHz

Frequency Response:

Standard tape:  30 - 15,000 Hz ±3 dB

Chrome tape:  30 - 16,000 Hz ±3 dB

Bias Settings: 

Standard = Maxwell UD

Chrome = TDK Kr0₂

Signal-to-Noise Ratio:

Standard tape without Dolby :  51 dB

Standard tape with Dolby :  58 dB

Chrome tape without Dolby :  63 dB

Chrome tape with Dolby :  60 dB

Erasing Suppression:  60 dB

Channel Separation:  35 dB

Cross-talk Suppression:  60 dB

Inputs Sensitivity/Impedance:

Microphone L , R & centre:  0,2 mV/1 k Ω

Line :  70 mV/180k Ω

DIN :  12 mV/30 k Ω

Outputs Level/Impedance:

Headphone :  minimum/8 Ω

Line :  1,2 V/ 600 Ω

DIN :  1,2 V/600 Ω

Power Requirements:  100, 117, 220, 240 Volts, AC 50/60 Hz

Power Consumption:  25 W

Dimensions (W x H x D):  380 x 105 x 250 mm (15" x 4" x 10")

Weight:  4,5 kg (10 lbs)

Colour:  Black

Sonab 67S

 Many people maintains that the turntable, after the loudspeakers, is the most important part of stereo equipment.

If you have a bad turntable, neither amplifier non loudspeakers will help. It will sound bad. In addition, an inferior turntable will ruin records. Stereo records of great value can quickly be ruined by a poor stylus or turntable.

We have one turntable of our own, the Sonab 67S.

It has all necessary technical features as well as highly distinctive styling. It is easy to work and is effectively isolated from vibrations.

Sonab 67S has a precision balanced tone-arm with adjustable antiskating.

The turntable is well protected from dust and can be played with the lid closed. The belt drive produces very low wow and flutter. In addition the synchronous motor provides a constant speed with low rumble factor.

Specifications:

Speed:  33 ⅓ and 45 rpm

Motor:  24-pole synchronous motor

Drive:  Belt drive

Deviation from Normal Speed:  less than ±1% Locked to mains frequency. Uneffected by normal mains voltage variations

Wow and Flutter:  less than 0,08% ( weighted peak value)

Rumble:  better than -60 dB

Turntable Platter:  Nonmagnetic, precision moulded

Weighting:  1,2 kg (2,6 lb)

Diameter:  305 mm (12")

Tone-arm: 

Needle and Ball bearings.

Statically balanced and free from torsional resonances.

Designed for lowest distortion due to angle deviation

Adjustable antiskating device

Tracking Force:  Counter weight, Adjustable for stylus forces from 0,5 grams

Tone-arm Geometry: 

Effective Arms Length :  216,0 mm

Preset Angle :  21,5 degrees

Overhang :  14,2 mm

Cartridge Shell:  light weight type with standard four-pin plug-in connection to tone-arm and standard cartridge fitting

Usable Cartridges:  with weight between 4 and 12 grams

Signal Cable Capacitance:  max. 100 pF

Antiskating:  Weight design. Adjustable

Cueing Device:  manual. Oil damped

Power  Requirements:  110 - 117, 220 - 240 V, AC 50/60 Hz , 5 VA

Dimensions (W x H x D):  435 x 150 x 350 mm (17" x 6" x 14")

Weight:  7 kg (15,5 lbs)

Colour:  Black

Technics ST-8044

 The first requirement in an FM tuner that is designed to furnish high fidelity reception is accurate tuning.  If the tuning is off just a bit, there is an increase in distortion and decrease in stereo separation, two problems which can negative the virtues of even the best tuner designs.

In the ST-8044, the problem of inaccurate tuning was solved quite simply. First, Technics designers removed all needle-type mechanical meters, which are usually used to indicate signal strength  and center-of-channel tuning, and replaced them with responsive and easy-to-read LED's .  And once you've tuned in a ststion, the active servo lock will keep it from drifting despite temperature and humidity changes. In short, with the ST-8044, accurate tuning aids and the servo lock contribute directly to low distortion and stable stereo separation.

 Active Servo Lock

One way to prevent frequency drift and its accompanying distortion is to "lock" the local oscilator. But with this approach, the IF stage and FM discriminator cannot respond to temperature changes, which occur as the tuner "warms up", and other varying conditions. However, the Active Servo Lock in this tuner maintains precise, center-to-channel tuning under these conditions by preventing frequency drift not only in the local oscilator but also in the IF stage and FM discriminator. The big merit is that even a careless or hasty setting of the dial is sufficient to tune in the station accurately with the ST-8044. Where as you normally would have to  position the center-tuning meter rather carefully for low distortion and good stereo separtion. with  the active servo lock you can tune within ±75 kh on either side of the station's frequency. The active servo lock is then activated three seconds after the tuning LED's light up, and at the same time the "Servo Lock" indicator light goes on.

Just tune the ST-8044 to the general area of the station and the active servo lock will do the rest. If for any reason you want to defeat the servo lock, you can do so by pressing a switch.

 High-Sensitivity Front End

The RF stage benefits from, among other components, a junction FET for good selectivity, sensitivity, image and spurious rejection. Tuning is accomplished with a precision3-ganged variable tuning capacitor, and the figures tell the story of the high-sensitivity of this tuner; usable sensitivity is 1,9 µV (300 Ω). The more important 46 dB stereo quieting sensitivity is 2,5 µV (75 Ω).

High S/N Ratio and Wide, Stable Separation

In the IF stage, you'll find three flat-group-delay ceramic filters for high selectivity and a five-stage differential amplifier with excellent limiting characteristics. Selectivity is 75 dB; the S/N Ratio is 75 dB (IHF), and separation is a wide 45 dB at 1 kHz, MPX decoding is accomplished with a PLL (phase locked loop) circuit incorporated into a single IC.

 5 LED's Indicate Signal Strength

The number of LED's lit indicate signal strength in a linear progression. One LED means that the signal is very weak and is barely being picked up by the tuner. Two LED'ss mean that the station is weak and the program material will be difficult to hear. Three LED's ; the quality of the sound will not be very good, but speech can be readily understood and music will be listenable.  Four LED's ; the signal is strong enough for good musical fidelity. Five LED's; strong signal, bets possible reception with this tuner.

 Other Features

Quadrature detector with outstanding characteristics contributing to a wide, flat frequency  response and low distortion.

Easy-to-read 220 mm dial scale. The tuning knob's "positive" feel is enhanced by an oil-less sleeve and a dial rope coated with fluoro-resin.

Special muting circuit to reduce pop noise when detuning.

Fm Auto/Mono switch and FM muting to eliminate inter-station noise when tuning between stations.

High-quality AM section with 2-ganged variable capacitor and ceramic filter.

Specifications

FM Tuner Section

Frequency range:  88 - 108 MHz

Sensitivity:

S/N 30 dB :  1,9 µV (300 Ω);  1,3 µV (75 Ω)

S/N 26 dB :  1,7 µV (300 Ω);  1,2 µV (75 Ω)

S/N 20 dB :  1,5 µV (300 Ω);  0,9 µV (75 Ω)

IHF usable Sensitivity:  1,9 µV (IHF '58)

IHF S/N 46 dB Stereo Quieting Sensitivity:  25 µV (75 Ω)

Total Harmonic Distortion (1 kHz):  0,15% (mono);  0,3% (stereo)

Signal-to-Noise Ratio:

Mono :  68 dB (75 dB, IHF)

Stereo :  65 dB (70 dB, IHF)

Frequency Response:  20 Hz - 15 kHz,  +0,5 dB -1,5 dB

Alternate Channel Selectivity:  75 dB

Capture Ratio:  1,0 dB

Image Rejection at 98 MHz:  55 dB

Spurious response Rejection at 98 MHz:  80 dB

AM Suppression:  55 dB

Stereo Separation:  45 dB at 1 kHz;  35 dB at 10 kHz

Carrier Leak:

19 kHz :  -35 dB (-40 dB, IHF)

38 kHz :  -48 dB (-40 dB, IHF)

Channel Balance:  250 Hz - 6300 Hz  ±1,5 dB

Limiting Point:  1,2 µV

Bandwidth:

IF Amplifier :  180 kHz

FM Demodulator :  1000 kHz

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

AM Tuner Section

Frequency Range:  525 - 1605 kHz

Sensitivity S/N 20 dB :  30 µV,  250 µV/m

Selectivity:  30 dB

Image Rejection at 1000 kHz:  50 dB

IF Rejection at 1000 kHz:  40 dB

General

Output Voltage:  0,6 V (fixed)

Power Consumption:  16 W

Power Supply:  Ac 110/120/220/240 V, 50/60 kHz

Dimensions (W x H x D):  430 x 142 x 254 mm (16-15/16" x 5-19/32" x 10")

Weight:  4,2kg (9,3 lbs)

Technics ST-8011

Specifications

FM Tuner Section

Frequency range:  88 - 108 MHz

Sensitivity:

IHF Usable Sensitivity:  10,8 dBf;  1,9 µV (IHF '58)

50 dB Quieting Sensitivity: 

Mono :  17,0 dBf;  3,9 µV (IHF'58)

Stereo :  38,6 dBf;  47 µV (IHF'58)

Total Harmonic Distortion [Mono]:  0,2% at 100 Hz;  0,15% at 1 kHz;  0,3% at 6 kHz

Total Harmonic Distortion [Stereo]:  0,35% at 100 Hz;  0,3% at 1 kHz;  0,4% at 6 kHz

Signal-to-Noise Ratio:

Mono :  75 dB

Stereo :  70 dB

Frequency Response:  20 Hz - 15 kHz,  +1,0 dB -2,0 dB

Alternate Channel Selectivity:  60 dB

Capture Ratio:  1,0 dB

Image Rejection at 98 MHz:  55 dB

IF Rejection at 98 MHz:  78 dB

Spurious response Rejection at 98 MHz:  78 dB

AM Suppression:  55 dB

Stereo Separation:  45 dB at 1 kHz;  35 dB at 10 kHz

Carrier Leak:

19 kHz :  -40 dB

38 kHz :  -50 dB

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

AM Tuner Section

Frequency Range:  525 - 1605 kHz

Sensitivity S/N 20 dB :  30 µV,  300 µV/m

Selectivity:  30 dB

Image Rejection at 1000 kHz:  50 dB

IF Rejection at 1000 kHz:  40 dB

General

Output Voltage:  0,6 V (fixed)

Power Consumption:  16 W

Power Supply:  Ac 110/120/220/240 V, 50/60 kHz

Dimensions (W x H x D):  430 x 92 x 240 mm (16-15/16" x 3-13/16" x 9-7/16")

Weight:  3,2kg (7,1 lbs)

Lenco L 75

 The Lenco L75 record player is a precision instrument of true Hi-Fi quality which will satisfy even the most demanding music lover. The instrument can be used for stereo as well as monophonic listening.

The usual speeds of 16²/₃; 33¹/₃; 45 and 78 RPM can be pre-set in click stops and the speed can also be varied continuously from 30 to 86 RPM.

 The light tonearm of the L75 is a first-class example of fine mechanical precision, and guarantees clear, undistorted sound reproduction, with the greatest possible protection for your records. The tonearm is lowered onto the record by a hydraulically damped lowering device - thereby eliminating the possibility of record or needles being damaged whilst putting the tonearm onto the record.

 Technical Description

The very silent 4-pole motor is spring mounted onto a rigid steel baseplate. The dynamically balanced turntable is made of die-cast zinc, and weighs 4 kg.

The power is transmitted from the conical motor shaft to the turntable by arubber covered idler whell. The speed is changed by moving the idler wheel on the motor shaft.

The miniature ball-bearings fitted into the tonearm allow for a free sideways movement, and the knife-edge bearing keeps friction to a minimum.

 An adjustable sliding weight enables one to set stylus pressure exactly to suit the cartridge being used. An automatic brake comes into operation when the turntable is switched off. All tonearms can be supplied with an anti-skating device.

Every L75 is supplied with a centre piece for records with a large centre hole, a stroboscope disc for exact setting of speed, a stylus-adjusting gauge for accurate setting of stylus overhang, a set of shock-absorbing mounting supports and a cut out template (only required for chassis model).

Specifications

Type:  Single record player

Drive:  Idler drive

Motor:  4-pole synchronous with conical axis

Speeds:  Four speeds 78, 45, 33-1/3 and  16-2/3

Fine Speed Regulation: Yes, continuously adjustable

Wow and Flutter:  ±0,08% / ±0,4%

Rumble:  36 dB (unweighted);  60 dB (weighted)

Plater:  Zinc-alloy

Diameter :  306 mm

Weight :  3,7 kg

Tone-Arm:

Lenght:  227 mm

Overhanging:  17 mm (adjustable)

Offset Angle:  23°12' (±0,8° max.)

Material:  Tubular Aluminium

Stylus pressure:  0,5 g

Design:  Power Requirement:  110 - 220V AC, 50/60 Hz

Finish:  Polychromatic Dark Grey and Silver

Dimensions:  445 x 335 x 150 mm

Weight:  10,5 kg

Lenco L-75/S (1976) italiano

BIC Venturi Formula 4

 About

B-I-C  Venturi Speaker Systems

In the short time that B-I-C Venturi speakers have been available to the public, they have earned an unprecedented reputation for reproducing accurate,life-like sound.

Based on an eclusive physic principle and coupled with some of the most advanced engineering ever concentrated on a speaker system. B-I-C Venturi speakers represent the ultimate in the state of the art.. This, plus their remarkably high efficiency and power handling capability, make it possible to finally achieve the wide dynamic range of music not previously available to the enthusiast.

 B-I-C Venturi  Formula 4

The Formula 4 is capable of producing still lower bass response even more efficiently than the remarkable Formula 2. it employs a larger, but still modest-sized enclosure and a 10" woofer.

The Formula 4 will yield sound pressure levels from amplifiers rated as low as 15 watts RMS that enhance such hi-fi systems and produce remarkable accuracy and quality.

Yet, when operated with amplifiers capable of very high, clean output power, the Formula 4 really shows its mettle. Played softly every musical nuances and delicate modulation is heard with absolute clarity and definition. Played loudly, the Formula 4 performs cleanly and articulately, following step for step the total dynamic range of the original program.

 B-I-C Venturi Principle Bass Section - transforms the magnitude of air mass and energy in a way never before applied to acoustics. The result is bass response hundreds percent more efficient and substantially purer in quality than is possible from any other speaker of comparable size.

Biconex Pyramidal Dispersion Horn - was developed to match the demanding capabilities of the B-I-C Venturi  bass section. It is far more efficient, can handle more power and covers a wider, uninterrupted frequency range than cones and domes. And, unlike other horn designs, it can't add metallic sound coloration and has truly wide angle disperdion in both the horizontal and vertical planes, for unrestricted system positioning.

Dynamic Tonal Balance Compensation - adjusts speaker performance automatically (when desired) to provide aurally "flat" response at all listening levels in accordance with the Fletcher-Munsen hearing characteristics. This is accomplished in a manner which cannot be achieved by amplifier loudness or contour controls.

Extended Musical Dynamic Range - results from the unique combination of high efficiency and high-power handling capability. Even our smallest model, the new Formula 4 can be used with amplifiers rated up to 100 watts RMS per channel.

Sturdily constructed enclosures, choice of 6 grille colors. The enclosures are sturdily constructed and are free of resonances and other spurious vibrations which add unnatural coloration often mistaken as bass. A new type, sonically transparent, attractive foam grille is available in a choice of black, brown, beige, burnt orange, blue, red, any of which can be resprayed to any desired colors. Optional bases available to enhance the appearance of B-I-C Venturi  speakers when placed on the floor.

Specifications

Max. Power Handling:  100 watts (RMS per channel)

Effective Response:  25 - 23,000 Hz

Sound Dispersal:  120° x 120°

Nominal Impedance:  6 Ω

Woofer:  10"

Midrange:  Biconex

Treble:  Super Tweeter

Controls:  Manual and Automatic Dynamic Tonal Balance Compenstaion

Front Grille:  Reticulated, zero-loss removeable foam.

Color Grille:  Brown, Black, Beige, Burnt Orange, Blue, Red

Dimensions (W x H x D):  13 ¼" x 25' x 13"

Weight (shipping):  48 lbs

Optional Base:  VB-4 (3 lb weight)

H.H. Scott T-527

Specifications

FM Tuner Section

Tuning Range:  87,5 to 108 MHz

Usable Sensitivity [Mono]:  7 dBf/2,2 µV

Sensitivity for 50 dB S/N Ratio [Mono]:  12 dBf/4,5 µV

Signal-to-Noise Ratio (at 65 dBf)

Mono :  65 dB

Stereo :  60 dB

Frequency Response:  10 to 15,000hz

Distortion (at 65 dBf)

Mono :  0,25%

Stereo :  0,5%

Capture Ratio:  1 dB

Alternate Channel Selectivity:  60 dB

Image Rejection Ratio:  80 dB

Stereo Separtion 91 kHz):  40 dB

Spurious response Rejection Ratio:  90 dB

AM Suppression Ratio:  60 dB

Streo Threshold (preset):  5 to 10 µV

Muting Threshold (Switchable on-off):  5 to 10 µV

 AM Tuner Section

Tuning Range:  525 to 1605 kHz

Usable Sensitivity:  150 µV/m

Signal-to-Noise ratio:  45 dB

Image Rejection:  60 dB

IF Rejection:  60 dB

General

Power Requirements: 

Europa :  220/240 V, 50/60 Hz

USA, Canada :  110/120 V, 50/60 Hz

Power Consumption:  18 watts

Dimensions (W x H x D):  420 x 140 x 290 mm

Weight:  7 kg

ElectroVoice Wolverine LS15

 "Now Wolverine by Electro-Voice adds a great new 15 inch Full-Range Loudspeaker.

By popular demand! You have asked your dealers for Wolverine quality in this authortative size. Here it is! And look what you get - only in  Wolverine - where both price and quality still amaze the experts."

Now, a complete selection of 8", 12" and 15" models in the unequaled value of Wolverine.

Five Outstanding Features

1. Rugged , one piece Die Cast Frame gives maximum durability.
2. Long Throw Voice Coil overcomes distortion characteristic of wide diameter, short throw coils.
3. Edgewise Wound Copper Voice Coil is 18% more efficient.
4. Reinforced Fiberglass Coil Form provides rigid circular assembly.
5. Dual Cone Construction produces extended high frequency response.

The Wolverine LS15 loudspeakers are designed to operate effectively both as full-range speakers and as woofers in multiway systems.  Full-range reproduction is enhanced by the exclusive Radax design.

The dimensions, mass and location of the coaxially mounted radax cone have been carefully chosen for maximum improvement of the speaker's high-frequency performance. Carefully selected and specially treated cone material assures extended bass response, affording pleasing reproduction of all low frequencies normally encountered in music.

When used as full-range units, they provide optimum sound reproduction at a minimum cost.

Wolverine Step-Up Kits provide a simple method for increasing performance of your loudspeaker system in stride with the budget,by building from a single loudspeaker to a deluxe 3-way system with properly matched components, and without obsoleting existing components.

Specifications

Frequency Response:  35 to 14,000 cps

Nominal Impedance:  8 Ω

Power Handling Capacity:

Program :  20 watts

Peak :  40 watts

Voice Coil Diameter:  2"

Magnet Weight:  13 oz. Cer. Indox

Nominal Resonance:  50 cps

EIA Sensitivity Rating:  47 dB

Dimensions (dia. x depth):  15-1/8" x 6-11/32"

Net Weight:  9 lbs

Baffle Opening:  14"

Mounting:  Four 9/32" holes equally spaced on circle of 14½"

ElectroVoice Wolverine LS15

 "Now Wolverine by Electro-Voice adds a great new 15 inch Full-Range Loudspeaker.

By popular demand! You have asked your dealers for Wolverine quality in this authortative size. Here it is! And look what you get - only in  Wolverine - where both price and quality still amaze the experts."

Now, a complete selection of 8", 12" and 15" models in the unequaled value of Wolverine.

Five Outstanding Features

1. Rugged , one piece Die Cast Frame gives maximum durability.
2. Long Throw Voice Coil overcomes distortion characteristic of wide diameter, short throw coils.
3. Edgewise Wound Copper Voice Coil is 18% more efficient.
4. Reinforced Fiberglass Coil Form provides rigid circular assembly.
5. Dual Cone Construction produces extended high frequency response.

The Wolverine LS15 loudspeakers are designed to operate effectively both as full-range speakers and as woofers in multiway systems.  Full-range reproduction is enhanced by the exclusive Radax design.

The dimensions, mass and location of the coaxially mounted radax cone have been carefully chosen for maximum improvement of the speaker's high-frequency performance. Carefully selected and specially treated cone material assures extended bass response, affording pleasing reproduction of all low frequencies normally encountered in music.

When used as full-range units, they provide optimum sound reproduction at a minimum cost.

Wolverine Step-Up Kits provide a simple method for increasing performance of your loudspeaker system in stride with the budget,by building from a single loudspeaker to a deluxe 3-way system with properly matched components, and without obsoleting existing components.

Specifications

Frequency Response:  35 to 14,000 cps

Nominal Impedance:  8 Ω

Power Handling Capacity:

Program :  20 watts

Peak :  40 watts

Voice Coil Diameter:  2"

Magnet Weight:  13 oz. Cer. Indox

Nominal Resonance:  50 cps

EIA Sensitivity Rating:  47 dB

Dimensions (dia. x depth):  15-1/8" x 6-11/32"

Net Weight:  9 lbs

Baffle Opening:  14"

Mounting:  Four 9/32" holes equally spaced on circle of 14½"

Luxman DZ-122

 The DZ-122 re-creates musicality to satisfy even the most demanding audiophiles. Luxman's exclusive circuit designs including Star Circuit Topology and factory trimmed dual D/A converters combine to achieve a sonic purity only found in Luxman equipment. The DZ-122 also offers edit and fade functions for  creating professional quality tape recordings.

Specifications

DAC Quantization:  18 bits

Oversampling:  8x

Frequency Response:  5 Hz - 20 kHz (±0,5 dB)

Total Harmonic Distortion:  0,005% (2V out, 1 kHz, 20Hz -20kHz BPF)

Signal-to-Noise Ratio:  105 dB (30 kHz IPF, IHF-A, Emph.on)

Dynamic Range:  90 dB (30 kHz LPF, IHF-A)

Channel Separation (1 kHz):  95 dB

Dimensions (W x H x D):  17-1/4" x 3-3/8" x 12-1/4"

Weight:  9,3 lbs

Luxman DZ-121

 The DZ-121 offers true fidelity with only the most essential features. Dual D/A converters and STAR Circuit Topology contribute to the warmth and musicality of this model. A high rigid lock mechanism stabilizes the disc for more accurate laser pickup. A full function remote control is included for easy operation

Specifications

DAC Quantization:  18 bits

Oversampling:  8x

Frequency Response:  5 Hz - 20 kHz (±1,0 dB)

Total Harmonic Distortion:  0,05% (2V out, 1 kHz, 20Hz -20kHz BPF)

Signal-to-Noise Ratio:  105 dB (30 kHz IPF, IHF-A, Emph.on)

Dynamic Range:  92 dB (30 kHz LPF, IHF-A)

Channel Separation (1 kHz):  90 dB

Dimensions (W x H x D):  435 x 75 x 300 mm

Weight:  4,7 kg

Yamaha CR-1000

 The performance specifications of Yamaha's CR-1000 professional-class stereo receiver are distinguished i two ways; they are superb and, like all Yamaha stereo specifications, they are conservatively rated and guaranteed. This of course says a great deal about the kind of quality the audiophile should expect from this receiver; but it says even more about the company that would build it. By any standards, the CR-1000 is an important achievement. It is a combination of an outstanding FM tuner and an extremely low-distortion, high-power, versatile amplifier, both of which could stand by themselves as independent hi-fi components. (It does not include an AM tuner because the discriminating music lover would most likely prefer to be without it.) the unit features the world's first application of negative feedback to the FM tuner's multiplex switching circuit, resulting in very low harmonic distortion and intermodulation distortion. Power is prodigious; RMS continuous output of 70 watts per channel into 8 ohms, both channels driven, at 0,1% THD over 20 Hz to 20 kHz. Because the FM tuner uses an elaborate 5-gang tuning capacitor, as well as a triple tuning circuit with dual-gated MOS-FET's, the quality of FM reception is at the highest level presently possible for a tuner of any cost. Which leads us to another significant facet of the CR-1000. with all its excellence, you shall discover its price to be surprisingly agreeable. This, by itself, makes the CR-1000 a most unique stereo proposition.

 FM Tuner Section Features:

Super-Sensitive FM Front End with Dual-gated MOS-FET's and Frequency-Linear 5-Gang Tuning Capacitor.

IC IF Amplifier with 7-stage Differential Amplifier and Six Ceramic Filters

A Yamaha Exclusive - Multiplex Demodulator with Negative Feedback-Applied Transistor Switching Circuit.

Yamaha-Exclusive Auto-Touch Tuning

Wide-Dynamic-Range Signal Strength Meter and Precise Center Meter.

Permanent Light-emitting Diode Indicators for Power, FM Stereo and AFC/Station.

Thump-free Switched, Double FM Muting with Muting Level Control.

Wide, Precise, Ultra-Smooth Tuning Dial.

300-Ω and 75-Ω Antenna Terminals

 Preamplifier Section Features:

Direct-Coupled Phono Equalizer.three-Stage Direct-Coupled, Low-Noise, Low-Distortion Tone Control and Filter Amplifiers.

Continuous Loudness Control

Specialized Microphone Amplifier for Mic Mixing.

Two Tape Record/Monitor Circuits with Dubbing.

Power Amplifier Features:

Direct-Coupled OCL Pure Complementary Power Amplifier

Two 10,000 Micro-Farad Power Supply Capacitors for High Power

Built-in Protection for Power Transistors and Speakers

Other Features:

Separable Preamplifier and Power Amplifier

Connects Two Pairs of Speaker Systems

Logical Front-Panel Control Arrangement; All Switches and Controls Have a Smooth, Firm, Professional Feel and are Arranged for Ease of Operation.

Two Phono Input Circuits, with Input Impedance Selector (100, 50 or 30 K Ω) for One

Four Convenient AC Outlets, Two Controlled by the Receiver's Power Switch

Two Large Grounding Terminals

Headphone Jack

Foolproof One-Touch Speaker Terminals

IF Output for 4-channel Capability

Multipath Output for Improved Antenna Setting.

Specifications

Audio Section

Power Output

Dynamic Power (IHF):  200 watts at 4 Ω; 200 watts at 8 Ω

Continuous RMS Power (each channel driven):

100/100 watts  at 1,000 Hz (4 Ω)

80/80 watts at 1,000 Hz (8 Ω)

Continuous RMS Power (both channel driven):

100/100 watts  at 1,000 Hz (4 Ω)

75/75 watts at 1,000 Hz (8 Ω)

Total Harmonic Distortion

Power Amplifier Only:  less than 0,1% at rated power (0,04% at 1 watt)

Preamplifier Only :

Phono to Pre-Out:    less than 0,1% at rated power

Aux to Pre-Out :  less than 0,02%  at rated power

Overall (Aux to Power Output):  less than 0,1% at rated power

Intermodulation Distortion (70 Hz : 7,000 Hz = 4:1 SMPTE method):

Power Amplifier Only (8 Ω):  less than 0,1% at rated power (0,05% at 1 watt)

Overall (Aux to Power Output):  less than 0,1% (8 Ω) at rated output

Power Bandwidth (IHF):  5 to 50,000 Hz (distortion 0,5% const.)

Frequency Response (at 1 watt):

Overall (Aux,Tape Pb to Power Output):  10 to 50,000 Hz +0,5 dB -1,0 dB

Overall (Mic to Power Output):  100 to 10,000 Hz +0,5 dB -6 dB

Power Amplifier Only:  10 to 100,00 Hz +0 dB -1 dB

Deviation from RIAA :  30 to 15,000 Hz ±0,2 dB

Load Impedance:  4 to 16 Ω

Damping Factor:  70 at 1,000 Hz

Channel Separation (at rateed power. 1 kHz)

Power Amplifier Only : 60 dB

Overall from Phono 1, 2 :  50 dB

Overall from Aux, Tape Pb :  50 dB

Overall from Mic :  50 dB

Hum and Noise (IHF, Closed Circuit A Network):

Overall from Phono 1, 2 :  better than 80 dB

Overall from Mic :  better than 70 dB

Overall from Aux, Tape Pb :  better than 90 dB

Power Amplifier Only :  better than 100 dB

Volume at Minimum :  better than 90 dB

Input Sensitivity / Impedance (at rated power, 1 kHz):

Phono 1 :  3 mV / 30 k Ω, 50 k Ω, 100 k Ω

Phono 2 :  3 mV / 50 k Ω

Phono 1, 2 Max. Input Capability:  280 mV (THD 0,1%)

Mic :  3 mV / 50 k Ω

Mic Max. Input Capability:  450 mV (THD 0,3%)

Aux 1, 2 :  150 mV / 40 k Ω

Tape Pb A, B :  150 mV / 40 k Ω

Power Amplifier Input:  775 mV / 40 k Ω

Output Level / Impedance (at rated Power, 1 kHz)

Tape Rec Out A, B :  150 mV ? 2 k Ω

Pre Out :  775 mV / 2 k Ω ; 3,000 mV (Max output THD 0,1%)

Tone Controls

Bass :  ±15 dB at 50 Hz

Treble :  ±10 dB at 10 kHz

Filters

Low :  -3 dB at 20 Hz , 70 Hz, (12 dB/oct)

High :  -3 dB at 6 kHz, 12 kHz (6 dB/oct)

Loudness Control (Volume at Minimum):  +10 dB at 100 Hz;  +5 dB at 10,000 Hz

FM Tuner Section

Tuning Range:  88 - 108 MHz

Sensitivity (Mono):

IHF :  1,7 µV

DIN (40 kHz Dev, S/N 26 dB) :  1,1 µV

Sensitivity (Stereo):

DIN (40 kHz Dev, S/N 46 dB) :  40 µV

Quieting Slope:  55 dB at 5 µV; 60 dB at 10 µV

Limiting Level (-3 dB):  1,1 µV

Image Frequency Rejection:  110 dB

IF Rejection:  110 dB

Spurious Response Rejection:  110 dB

AM Rejecton:  55 dB

Capture Ratio:  1 dB

Selectivity:  80 dB (IHF); 65 dB (DIN, 40 kHz Dev, ±300 kHz)

Signal-to-Noise Ratio (Mono):

IHF (75 kHz Dev) :  75 dB

DIN (40 kHz Dev) :  69 dB

Signal-to-Noise Ratio (Stereo):

IHF (75 kHz Dev) :  72 dB

DIN (40 kHz Dev) :  66 dB

Total Harmonic Distortion (Antenna Level; 1mV)

MONO

IHF (400 Hz; 75 kHz Dev) :  0,15%

DIN (1 kHz; 40 kHz Dev) :  0,15%

50 - 10,000 Hz

IHF (75 kHz Dev) :  0,30%

DIN (40 kHz Dev) :  0,30%

STEREO

IHF (400 Hz; 75 kHz Dev) :  0,30%

DIN (1 kHz; 40 kHz Dev) :  0,30%

50 - 10,000 Hz

IHF (75 kHz Dev) :  1,0%

DIN (40 kHz Dev) :  1,0%

Stereo Separation:

IHF (400 Hz; 75 kHz Dev) :  45 dB

DIN (1 kHz; 40 kHz Dev) :  45 dB

50 - 10,000 Hz

IHF (75 kHz Dev) :  35 dB

DIN (40 kHz Dev) :  35 dB

Frequency Response:

50 - 10,000 Hz :  ±0,5 dB

20 - 15,000 Hz :  ±1,5 dB

Sub-Carrier Supression:  60 dB

Muting Override Signal Level:  10 - 50 µV

Stereo Level:  10 - 50 µV

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

IF Out Level and Impedance:  400 mV / 1 k Ω

General

Semiconductors:  2 Ics, 2 MOS FET's, 98 Transistors, 10 FET's, 3LD's, 56 Diodes, 5 Zener Diodes

Power Source:  Ac 117 V 50/60 Hz

Power Consumption:  430 watts (Max), 250 watts (rated)

AC Outlets:  2 Switched (total 200 watts), 2 Unswitched (total 200 watts)

Dimensions (W x H x D):  510 x 174 x 335 mm (20" x 6 ¾" x 13 ¼")

Weight:  19 kg (41,8 lbs)