Sansui SR-535 turntable

Automatic Direct-Drive Turntable

Sansui wants everyone to enjoy hi-fi music with the minimum possible noise, distortion and inconvenience. That's why the Sansui SR-535 automatic direct-drive turntable puts the emphasis on pure hi-fi performance and true handling ease. Accuracy of platter rotation, and a strong, anti-howl construction characteristics in the musical department. The direct-drive motor is a high-torque type and the special tonearm has a unique support to ensure delicate performance. Record reproduction is always clean and pure.

One simple control, the Auto/Manual Play Lever, does all the work. Put a record on the platter, set the record-size selector and pull the lever once; the tonearm is lifted, moved and gently lowered to the lead-in groove, when the record ends, the arm is returned to its rest and power shuts off automatically. The same lever permits manual play when desired. More convenience is offered in the Repeat facility permitting you to select one to five replays, or infinite replay.

 

Automatic Operation

One control knob does it all. The jumbo-sized Auto/Manual Play Lever has three positions of Manual On, Off, Auto Start/Stop. For a single automatic play, you simply place a record on the platter and gently pull the Auto/Manual lever into the Auto Start/Stop position. The tonearm lifts automatically as the platter begins to spin, the stylus is placed over the lead-in groove of the record, and the tonearm descends to begin play. If you desire to interrupt play at any time, simply pull the lever again, or you may wait till the record ends. In either case, the arm is automatically lifted  and returned to its rest, and power is switched off, all without your assistance.

When manual play is desired, simply set the control lever to the Manual On position. When the platter begins to rotate, move the stylus to over the part of the record you want to hear. An oil-damped Cueing Lever is provided to help you avoid damaging your valuable records. As in Auto Play, the Manual position on the lever allows the automatic return mechanism to return the tonearm to its rest.

Additional convenience Auto Repeat control on the SR-535.

In the Off position if sets the turntable in auto-return mode. Or, you can select from "1" to "5" repeat plays, or "infinite" which allows the automatic mechanism to continuously repeat its simple job until you change the repeat control settings.

 

Accurate Drive System

Sansui engineers have done if again. The platter of the Sr-535 never shows any appreciable slow-down under reasonable loads. This means that your 33-⅓ and 45 rpm records are always played at the correct speeds for best musical performance. This accuracy is assured by an advanced, high-torque, 20-pole/30-slot brushless DC type servo motor for direct drive. Speed drift is effectively eliminated by the Sansui-exclusive rotor position sensor mechanism, coupled with the motor's bias-controlled saturable core (Sansui Pat. Pend). Thanks to the dependable power supply, the drive voltage is kept constant for accuracy under any conditions.

Mechanically, as well as electrically, the SR-535 has impressive precision. All components and parts are designed, machined and assembled under very careful super-vision to live up to Sansui's strict quality control standards. The bearing sleeve is mirror finished for complete roundness, for instance. The motor shaft/center spindle is formed of the finest polished carbon-chrome steel and rides in a thrust bearing of tough friction-resisting synthetic polyamide. We've used a special lubricant, one developed by the aerospace industry, to ensure low friction in the motor over long years of operation.

Smoother rotation is also ensured by the heavy (1,4 kg ) aluminum die-cast platter. This, plus Sansui's attention to every minor point in design and construction, gives the Sr-535 impressive specifications low 0,038% wo/flutter and better than 67 dB rumble.

Fine speed adjustment with strobe

On the edge of the oversized (31,8 cm or just over 12-inch) platter there are four rows of stroboscopic patterns, two each for both speeds to permit fine adjustment when your electrical power is either 50 Hz or 60 Hz. The strobe light illuminates the platter edge so that you can visually check its rotation speed for accuracy. Once the correct speed is reached, the speeds will continue to spin accurately, or you can use two fine speed controls to vary platter by as much as ±3,5% from the standard speeds. By the way, these controls are recessed to avoid accidental speed change.

 

Stabilized Tonearm

Exceptionally high tonearm stability is one of the reasons the Sansui Sr-535 performs with such high musicality. Despite the attractive price of this fully automatic turntable, the tonearm has the same stability and resistance to resonance found in much more expensive models. Spurious vertical travel and harmful torsion or twisting are avoided by a special support with two vertical pivots. The mass of the arm is concentrated at these points to clearly define the unit's fulcrum for better mechanical advantages, particularly in the bass frequencies which are delivered from your record free of "mud".

Low-resonance design

Resonance is further suppressed by the special acoustic absorbent, we use inside the highly rigid tonearm tubing. Then, we've decoupled the balance weight from the arm shaft vis a newly designed rubber damper. All types of vibration whether  transmitted through the air or through the physical structure, are shut out before reach the stylus.

Other tonearm features:

Zinc-alloy die-cast arm base; a massive heavy structure to improve bass response by firmly securing the arm to the cabinet.

Direct readout tracking force dial; precision-calibrated markings every 0,25grams one rotation covers 0-to-3 gram range

Gold-plated connection pins; free from all forms of rust to ensure maximum transfer of the tiny electrical signals from cartridge to your amplifier

Arm lifter lever; oil damped for smooth operation

Anti-skate knob; adjustable even as the record is played, another bonus in this attractively priced turntable.

 

Cabinet

Sansui designers take special pride in the clean, modernistic looks of the SR-535 turntable. The silver metallic finish sets off the precision lines of the cabinet and is just "flat" enough to resist glare from room lights without appearing too dull. The clean lines are more than good looking, advanced computer technology and time-tested carpentry techniques alike were used in designing the Sr-535 to resist acoustic feedback or "howling". The automatic mechanism is mounted on a separate chassis inside the cabinet for instance while the low-profile of the base and its complex suspension system further ensure good sound.

Complex-suspension

To defeat all types of vibration before they can harm your music, the SR-535 is suspended in a complex system of rubber and spring devices. Air-borne vibration, such as sound-waves from your speakers, and structure-borne vibrations, such as originating from your operation of amplifier or receiver controls, from footsteps, etc. Are effectively damped so that your music retains its tight bass, clean mids and crisp highs.

 

Specifications

Type:  two-speed, direct-drive automatic turntable

Motor:  20-pole, 30-slot DC brushless

Drive System:  Direct spindle drive electronically servo controlled

Platter:  318 mm aluminum alloy die-cast

Platter Weight:  1,4 kg (3,1 lbs)

Wow and Flutter:  less than 0,038% WRMS

Signal-to-Noise Ratio (IEC-B) :  better than 57 dB

Rumble (DIN-B) :  better than -67 dB

Speeds:  33-⅓ and 45 rpm

Fine Speed Adjustment:  ±3,5%

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

Length:  220 mm pivot to stylus tip

Overhang:  17,5 mm

Offset Angle:  24,5°

Minimum Tracking Force Setting:  0,8g (when using cartridge guaranteed to operate at 0,8g stylus pressure)

Acceptable Cartridge Weight:  4 to 10 g

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

Cartridge:  Sc-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 g ±0,4 g

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

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

Power Consumption:  less than 9 watts

Dimensions (W x H x D):  460 x 166 x 370 mm (18-1/8" x 6-3/16" x 14-9/16")

Weight:  9,2 kg (23,6 lbs) packed

 

Sanyo RD-4028UM cassette deck

Stereo cassette deck with Dolby Noise Reduction and CrO₂ /  FeCr / Normal Tape selector

Hiss-less audio reproduction with Dolby Noise Reduction

Separate equalizer and bias switches are provided for optimum use of any kind of tape

Wow and flutter is 0,12% WRMS, S/N ratio is 50 dB with the Dolby switch ON

Automatic shut-off in playback and record modes

Illuminated VU meters

Piano key tape function controls

Slide type recording level controls with level indexes

Jacks for microphones, headphone, line in, line out and DIN connectors

3-digit tape counter

 

Specifications

Recording System:  AC bias, 70 kHz

Erasing System:  AC erase, 70 kHz

Tape Speed:  1,7/8 ips (4,75 cm/sec)

Fast Forward and Rewind Time:  110 sec.

Wow and Flutter:  0,12% WRMS

Frequency Response:

Normal Tape :  30 - 13,000 Hz ±6 dB

CrO₂ Tape :  30 - 16,000 Hz ±6 dB

FeCr Tape :  30 - 15,000 Hz ±6 dB

Signal-to-Noise Ratio

Dolby ON :  50 dB

Dolby OFF :  58 dB

Inputs Sensitivity/Impedance

Mic :  0,3 mV/10 k Ω

Line In :  55 mV/50 k Ω

Output Level/Impedance

Line Out :  0,4 mV/3 k Ω

Headphone :  8 Ω  - 10 k Ω

Semiconductors:  3 ICs; 8 Transistors; 10 Diodes

Power Requirements:  AC 110/125/220 V 50/60 Hz

Power Consumption:  7 W

Dimensions (W x H x D):  385 x 130 x 260 mm

Weight:  3 kg (6 lbs 10 oz)

 

Harman/Kardon 930 receiver

Twin powered AM/FM and Stereo FM solid state receiver

Harman/Kardon engineering skill has been incorporated into a superb receiver; the 930. we say with full confidence that the Harman/Kardon 930 creates a new standard for stereo high fidelity receivers

 

The twin-powered amplifier section

The Harman/Kardon 930 is the first receiver in the world with two totally separate power supplies. Several manufacturers imply that their receivers incorporate two power supplies in reality, they employ a single supply with negative and positive voltages. The 930 also employs negative and positive voltages But, in addition, each chabnnel is completely isolated and has its own power transformer and electrolytics. Each channel has its own regulated voltages to permit that channel to respond to full RMS power output without being affected by the other channel. Thus, the 930 guaranteed flawless performance regardless of how much power the amplifier is called upon to deliver.

 

Power rating

Power rating is one of the most abused specifications in high fidelity. Despite the existance of standard procedures, it is often the manufacturer who determines the conditions under which power is rated. Harman/Kardon engineers believe that Continuous power, calculated from TMS voltage measurements, is the only meaningful way to rate power output.

But such a rating is still insufficient. Firstly, Continuous power output must be measured with both channels driven simultaneously at a specified distortion level. Secondly, the load impedance and power line voltage at which the measurement was taken must be given.

Finally, the measurements should be made across the entire frequency spectrum, rather than at 1,000 Hz. In short, the conditions under which the receiver is measured should be similar to those under which it will be used.

 

The preamplifier.

The 930's preamplifier delivers a signal so pure that its distortion cannot be measured with any degree of accuracy, even on the most sophisticated analysers. Only professional separate components can match this preamplifier section's hum noise and frequency response specifications.

One of the most important specifications of any high quality preamplifier is that of phono overload. The 930 specification is equal to or better than that of any receiver available. The 930 preamplifier can handle an input signal 50 times greater than that required to drive it to full output. This makes it virtually impossible to distort the preamplifier output.

What is more, absolute accuracy in playing back stereo records is assured as a result of the extremely tight tolerance of the RIAA playback curve.

 

The Tuner section

The tuner section of the 930 is a worthy companion to its superb amplifier. It employs high gain integrated circuits and matched ceramic filters. The result is hard limiting and excellent alternate channel selectivity. Hard limiting permits the detection of all FM stations - weak or strong - with equal clarity. Noise and distortion are completely eliminated. What's more, the excellent capture ratio and alternate channel selectivity mean that even weak stations will emerge free of interference from adjacent strong stations, impulse noise, and multipath interference. Precise alignment of the IF section is "frozen" into the circuitry and never requires realignment.

An FET front end, coupled with a four ganged tuning capacitor assures maximum sensitivity. The ultra-linear ratio detector delivers a precision composite signal to the multiplex section. Thus, even the highest frequencies are free of distortion.

The multiplex section employs balanced integrated circuitry which completely cancels SCA interference and high frequency phase distortion. It maintains maximum stereo separation throughout the entire audio range.

The FM muting circuit is of unique design which provides a smooth-as-velvet muting transition. In reality, it's simply go, no-go muting.

In short, the tuner section of the 930 assures unsurpassed sensitivity and selectivity and achieves a degree of excellence on a par with the receiver's amplifier.

 

Specifications

Amplifier Section

Power Output:  45/45 watts, RMS , both channels driven into an 8 Ω  load, from 20 - 20,000 Hz at less than 0,5% T.H.D. 120 volts, 50/60 Hz AC (same specification applies to 220 volts, 50 Hz model)

Power Bandwidth:  From less than 10 Hz to beyond 40 kHz at less than 0,4% T.H.D. into 8 Ω , both channels driven simultaneously.

Total Harmonic Distortion :  less than 0,5% at 45/45 watts. Power output into 8 Ω , 20 - 20,000 Hz, both channels driven simultaneously (typically runs 0,2% from 20 - 20,000)

00,7% (10 - 40,000 Hz) at 1 watt both channels driven simultaneously

Intermodulation DIstortion :  Less than 0,15% at full rated output

Input Sensitivity:  1,5 volts for full output

Hum and Noise:  better than 85 dB below rated output (Unweighted)

Damping Factor:  30:1 below 20 Hz

Input Impedance:  33,000 Ω

Frequency Response:  From below 4 Hz to beyond 70 kHz ±0,5 dB at normal power levels. From below 1 Hz to beyond 100 kHz ±1,0 dB at normal power levels

Square Wave Till:  less than 5% at 20 Hz. Typical tilt is less than 2%

Square Wave Rise Time:  less than 2 microseconds

Stability:  Absolutely stable with all types of speakers including electrostatic

Preamplifier Section

Audio Output:  0 to 2,5 V, RMS, minimum

Frequency Response:  from below 3 Hz to above 100 kHz ±0,5 dB

Total Harmonic Distortion :  less than 0,05% at 2 V output, 20 - 20,000 Hz

Square Wave Tilt:  less than 5% at 20 Hz, Typical 2% at 20 Hz

Square Wave Rise Time:  less than 1,5 microseconds

Noise (Unweighted): 

Low level:  65 dB below 2 volts at 10 millivolts input reference.

High level:  80 dB below 2 volts, Volume control wide open

Residual :  90 dB below 2 volts

Input Impedance: 

Phono :  47 k Ω

Aux :  20 k Ω

Output Impedance:  less than 1,000 Ω

Phono Overload:  90 millivolts

Tone Controls:  ±12 dB boost and cut, bass and treble

Tuner Section

FM sensitivity:  1,8 mV , IHF

Limiter Saturation:  less than 1,5 mV

Ultimate Signal-tonoise:  70 dB

Capture Ratio:  less than 2 dB

Alternate Channel Selectivity:  better than 50 dB

Image Rejection:  90 dB

Spurious Response Rejection:  90 dB

IF Rejection:  90 dB

Fundamental Plus Half IF:  90 dB

AM rejection:  better than 60 dB

Level Meter Sensitivity:  50 mV (25%); 1000 mV (100%)

Audio Frequency Response :  Below 15 Hz to beyond 30 kHz ±1,0 dB

Total Harmonic Distortion :

Mono :  0,5%

Stereo :  0,6%

Multiplex Separation:

100 Hz :  33 dB

1 kHz :  38 dB (40 dB typical)

10 kHz  :  30 dB

Antenna Impedance:  75 and 300 Ω

AM Loop Sensitivity:  better than 200 mV /1m

Selectivity:  35 dB average of lower and upper selectivities

Image Rejection:  better than 60 dB

IF Rejection:  better than 60 dB

Dimensions (W x H x D):  432 x 349 x 120 mm (17" x 13-3/4" x 4-3/4")

Weight:  13,1 kg (29 lbs)

 

Aiwa AS-S30 amplifier

Stereo Integrated Amplifier

Fifteen big Watts per channel of honest-to-goodness high fidelity sound from a 2-stage differential SEEP-OCL integrated amplifier an incredibly compact 7,1 cm high by 21 cm wide. Yet, the A30 has plenty of room to accommodate up to 4 external components including tape, deck, tuner and record turntable.

Power output has been boosted by use of a new extra-stable power transformer with independent coils for power and preamplifier sections, and enlarged heat sinks aid in efficient heat dissipation.

For low noise and dynamic performance from high quality MM phono cartridges, the improved phono equalizer IC has boosted Signal-to-Noise Ratio to an excellent 82 dB, with very low 0,005% distortion at 1 kHz. RIAA equalization is a remarkably precise ±0,2 dB throughout the 20 to 20,000 Hz frequency range. For well-balanced listening at low output volumes a switchable loudness compensation circuit is provided.

 

 

Plus features:

5-LED logarithmic peak output indicator [0,1 - 40 watts]

AUX component terminals

Stereo headphone jack

Power On LED indicator

Bass, treble, balance controls

Quick one-touch speaker connection terminals

Rack handles included

 

Specifications

Type:  Stereo integrated amplifier

Semiconductors:  5 ICs; 5 Transistors; 12 Diodes, 6 LEDs

Power Amp Section

Effective Output Power:  20 W + 20 W (8 Ω ) U model

15 Watts per channel , Min. RMS at 8 Ω , from 20 Hz - 20 kHz, with no more than 1% T.H.D.

Tdh :  0,1% (1 kHz, 5 W + 5 W) U model

Total Harmonic Distortion from 20 to 20 kHz at 250 mW to 15 W power at 8 Ω  , 1 % Max

Output Bandwidth:  10 Hz to 20,000 Hz (less than1%)both channel driven, 8 Ω

Frequency Response:  20 to 20,000 Hz

Pre-Amp Section

Signal-to-Noise Ratio (IHF A curve, short circuit, Weighted):

Phono :  better than 76 dB

Tuner, Aux :  better than 90 dB

Tone Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Loudness:

6,5 dB at 100 Hz (±1,5 dB)

3,5 dB at 10 kHz (±1,5 dB)

RIAA Deviation: ±0,2 dB (20 Hz - 20,000 Hz)

Channel Separation: better than 40 dB

Phono Overload Level:  better than 100 mV (MM, at 1 kHz)

Channel Balance:  less than 3 dB

Residual Noise:  less than 2 mV

Input Sensitivity/Impedance:

Phono :  2,5 mV/47 k Ω

Tuner :  150 mV/47 k Ω

Aux :  150 mV/47 k Ω

Tape :  150 mV/47 k Ω

Output Level/Impedance:

Tape :  120 mV/47 k Ω

Headphones Load Impedance :  8 to 16 Ω

Speakers Impedance :  8 to 16 Ω

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

Power Consumption:  40 W

Dimensions (W x H x D):  210 x 71 x 200 mm (8-1/4" x 2-3/4" x 7-7/8")

Weight:  3,15 kg (6,9 lbs)

 

Aiwa AP-D35 turntable

A beautifully styled semi-automatic belt-drive unit, the AP-D35 combines a stable AC synchronous motor and large 30 cm diecast platter for low o,o7% Wow and Flutter. Sensitive low-mass straight tonearm is designed for improved trackability, features adjustable anti-skating cueing and auto-return.

Features:

Anti-howling design with large, stable insulator feet

Removable plastic dust cover

Front panel Eject and Speed selection switches

MM Phono cartridge included

 

Specifications

Type:  Semi-Automatic 

Drive System:  Belt-drive

Motor:  4-pole Synchronous Motor

Speed:  33-⅓ and 45 rpm

Turntable Platter:  Aluminum Alloy Diecast

Platter Diameter :  300 mm

Platter Weight :  0,4 kg

Wow and Flutter:

WRMS :  0,07%

DIN :  0,14%

Signal-to-Noise Ratio:  60 dB (DIN-B Curve, Weighted)

Tonearm Section

Type:  Static balanced Straight Type

Effective Arm Length:  217 mm (±2 mm)

Overhang:  16 mm

Tracking Error:  +3°, -1°15'

Offset Angle:  23°30'

Usable Cartridge Weight:  5 g to 9 g

Applicable Tracking Force:  0 to 4 g (0 to 39,2 mN)

Arm Sensitivity: 

Horizontal :  300 mg

Vertical :  300 mg

Arm Effective Mass:  20 g (included cartridge)

Cartridge

Type:  Moving Magnet (MM)

Output Voltage:  3,5 mV (1 kHz)

Separation:  20 dB (33-⅓ rpm, 1 kHz)

Frequency Response:  20 to 20,000 Hz

Static Compliance:  8 x 10¯⁶ cm/dyn

Stylus pressure:  2,5 g (±0,5 g)

Load Capacitance/Impedance:  200 pF/47 k Ω

Stylus:  0,7 mill diamond

Dynamic Compliance:  5 x 10¯⁶ cm/dyn

General

Power Requirements:  AC 110-120/220-240 V 50/60 Hz (H model)

Power Consumption:  7/8 W (H model)

Dimensions (W x H x D):  420 x 105 x 355 mm (16-9/16" x 4-3/16" x 14")

Weight:  4,2 kg (9,3 lbs)

 

Aiwa SD-L30 cassette deck

Stereo Cassette Deck

High performance recording and playback in a tape deck less than 7,2 cm high

A full-fledged, full-performance stereo unit with every essential feature you'd expect to find in larger systems, the SD-L30 combines modern styling with an incredibly precise slot-in loading mechanism and reliable DC servo motor that makes you wonder why decks got so big and complicated in the first place.

Metal Compatibility

The ability to make recordings on high performance metal cassettes is no longer a luxury confined to high priced avantgarde models; Aiwa has modified the SD-L30's circuitry and boosted erasure power to ensure full compatibility with metal. Along with extended frequency response metal tapes will give such dynamic sound you'll want to use them for all your serious recording work. A tough long-wearing hard Permalloy record/playback head and dounble-gap ferrite erase head ensure trouble free performance from all tape formulations.

Optical Peak Display

Besides conserving space, responsive peak LEDs provide an additional measure of accuracy to take the guesswork out of record level adjustment. Signals are indicated separately for left and right channels in an easy-to-read 3-color sequence from -10 dB to +6 dB

Amazingly, the SD-L30 even has rear panel jacks to accommodate a pair of microphones for live stereo recordings

Plus features:

Dolby NR system

Full auto stop

Separate L/R record volume controls

Line/mic input selector

Digital tape counter

Head cleaning access window

 

Specifications

Wow and Flutter:  0,09% WRMS

Signal-to-Noise Ratio:  60 dB (Dolby On)

Frequency Response

LH Tape :  25 -14,000 Hz

CrO₂ Tape :  25 - 16,000 Hz

Metal Tape :  25 - 16,000 Hz

Input Sensitivity/Impedance

Line In :  50 mV/50 k Ω

Mic :  0,3 mV/200 Ω  - 10 k Ω

Output Level/Impedance

Line Out :  0,41 V/50 k Ω

Head

Rec/Playback :  Hard Permalloy head

Erase :  Hi-Bs double gap ferrite head

Motor:  DC servo motor

Power Requirements:  240 V 50/60 Hz

Dimensions (W x H x D):  210 x 72 x 229 mm

(8-5/16" x 2-7/8" x 9-1/16")

Weight:2,8 kg (6,2 lbs)

 

Aiwa ST-R30 tuner

AM/FM Stereo Tuner

An unpretentious tuner with some very impressive credentials, the R30 brings a new dimension in design and convenience to radio listening enjoyment.

Accurate Digital Display

Regardless of scale length, you're never quite sure where you're tuned with linear or rotary scales, because their graduations are usually too widely spaced to define tuning variations as close as 100 kHz (FM) or 1 kHz (AM). This alone is one big advantage of a property designed digital readout. For extra accuracy, the frequency counter IC in the R30's digital unit employs a quartz crystal which provides an unerring 6,4 MHz reference signal to ensure that tuning is held within a close ±25 kHz for FM or ±1,5 kHz for AM.

Superb Performance

For the best possible sensitivity and rejection of spurious signals, front end design employs a high stability cascade junction MOS FET. Moving on to the IF detector stage, outstanding 70 dB selectivity within 400 kHz is realized by use of ceramic filters specially chosen for the flattest possible group delay characteristics, which in turn has achieved low noise and distortion. Beautiful stereo separation (45 dB at 1 kHz) is maintained by means of a stable PLL IC in the MPX demodulator stage.

Other Features:
hi-bled circuit

5-LED signal strength indicator

FM stereo indicator

Antenna terminals for 75 oh and 300 Ω

FM muting/AFC combination switch

AM/FM indicator LED

Rack Handles included

 

Specifications

FM Section

Sensitivity

Mono : 1,9 µV (usable sensitivity)

Stereo :  43 µV (at S/N 50 dB)

Signal-to-Noise Ratio

Mono :  73 dB

Stereo :  70 dB

Total Harmonic Distortion

Mono :  0,1%

Stereo :  0,25%

Capture Ratio:  1,5 dB

Stereo Channel Separation:  45 dB (at 1 kHz)

Frequency Response:  30 - 15,000 Hz (+0,5 dB, -1,5 dB)

IF Rejection:  80 dB

AMSuppression Ratio: 55 dB

AM Section

Frequency Range:

MW :  525 kHz - 1,605 kHz

LW :  150 kHz - 285 kHz

Power Requirements:  240 V 50/60 Hz

Dimensions (W x H x D):  210 x 71 x 254,5 mm (8-5/16" x 2-13/16" x 9")

Weight:  2,1 kg (4,6 lbs)

 

Superscope CD-302A cassette deck

Stereo cassette tape deck, features:

Built-in Dolby Noise Reduction System - with internal/external switching that enables it to operate as an independent out board playback Dolby system. Unlike most other Dolbyized units, the CD-302A Deck can also deprocess Dolbyized material from FM broadcasts and other tape recorders.

Automatic Shut-Off - that disengages the cassette drive mechanism at end-of-tape in record and play modes.

 

 

Recording Peak Limiter - that monitors and holds the recording level below saturation to prevent distortion while maintaining a full dynamic range.

Tape Select Switch - for proper bias and equalization when using either standard or chromium dioxide tape.

Mechanical Locking Pause Control - that enables you to pause during playback or recording without disengaging controls

VU Meters, Function Indicators and Cassette Compartment - that are illuminated for easy viewing

3-Digit tape Counter - with a reset button.

Walnut-Grained cabinetry - and the professional styling you'd expect to find only in more expensive units.

 

Specifications

Tape Speed:  4,8 cm/sec. (1-7/8 ips)

Reel Size:  compact cassette

Recording System:  Quarter-Track Stereo

Rewind and Fast Forward Time:  85 sec. C-60 cassette

Frequency Response

Standard Tape :  40 - 10,000 Hz

Chromium Dioxide Tape :  40 - 14,000 Hz

Signal-to-Noise Ratio

Standard Tape :  48 dB

Chromium Dioxide Tape :  51 dB

Bias Frequency:  85 kHz

Type of Level Indication:  Two VU Meters

Head Configuration

1 half-Track Erase

1 Quarter-Track Record/Playback

Wow and Flutter:  0,2% at 4,8 cm/sec. (1-7/8 ips)

Type of Motor:  One DC Electrical Governor Controlled

Semiconductors:  30 Transistors; 21 Diodes; 2 FET's

Inputs Sensitivity/Impedance:

Two Auxiliary (one for each channel Plug type Phono):  60 mV/180 k Ω

Two Microphone (one for each channel, Plug type Mini):  -72db/ low impedance

Outputs Level/Impedance:

Two Line (one for each channel, Plug type Phono):  0,775 V (at 0 VU) / 6 k Ω

One Stereo Headphone (Plug type Phono):  44 mV/8 Ω

One DIN Connector (Rec/Play)

Input Sensitivity/Impedance :  12 mV/47 k Ω

Output Level/Impedance :  0,775 V (at 0 VU) / 6 k Ω

Power Requirements:  110/220/240 Volts AC 50/60 Hz

Power Consumption:  11 Watts

Dimensions (W x H x D):  318 x 83 x 225 mm (12-1/2" x 3-1/4" x 8-7/8")

Weight:  2,7 kg (6 lbs)

 

Sanyo RD-4300 cassette deck

Stereo Cassette Tape Deck

The perfect stereo cassette tape deck for audio perfectionists. This brand new Sanyo model contains Dolby Noise (Reduction) which almost completely eliminates annoying huma and hissing sounds that heretofore have been an unavoidable part of stereo cassette recording and playback. This advanced unit also has a tape select switch for nominal or high quality chrome tapes. Monitoring while recording is also possible and a cue control and full automatic shut off are built in. At the end of a recording a special memory counter returns the tape to the exact beginning of the freshy recorded material.

Other outstanding features include a pause button, output level control for lineout level, DIN connector and two large VU meters a panel that automatically rises up from the unit at the touch of a button. The Signal-to-Noise Ratio of model RD4300 with the Dolby switch on is 58 dB and the amazingly flat frequency response when a chrome tape is used is 20 to 18,000 Hz. An outstanding stereo tape deck for audio enthusiasts who refuse to settle for less than the best.

 

Features

Dolby noise Reduction

A simple comparison of sounds with the Dolby function switch on and then off clearly shows the value of this noise reduction circuit. Tape hissing and other irritating sounds and humming are almost totally suppressed.

Convenient cueing control, Auto Stop

Finding recorded sections of the tape during fast forward and rewind has been greatly facilitated with a built-in cueing device. There is also a full automatic shut off system that turns off the mechanism at the end of the tape during playback, recording, rewind or fast forward.

Tape select switch for ordinary and chrome tapes

This unit takes both chromium dioxide and ordinary cassette tapes. The wider frequency response of chrome tapes is rated at 20 to 18,000 Hz. A tape select switch is provided for differentiating between the two types.

Excellent sound characteristics

Wow and flutter of this model is 0,1% RMS, and the Signal-to-Noise Ratio when the Dolby switch is on is rated at 58 dB

Two large VU meters

For precision recording and playback two large VU meters are supplied. These meters are built into a special panel that tilts up automatically from the unit at the touch of a button.

Other

Other features include a pause button, separate record/play controls, two microphone inputs, a double eject system that allows you to check the amount of tape left without disturbing the playback or recording and a detachable plate for easy head-cleaning.

 

Specifications

Recording System:  AC bias, 1/4 track stereo

Erasing System:  AC erase

Tape:  Chromium dioxide tape or ordinary cassette tape

Tape Speed:  1-7/8 ips (4,75 cm/sec.)

Recording Time:  60 min. (double-track C-60 tape)

Fast Forward and Rewind Time:  70 sec.

Wow and Flutter:  0,1% RMS

Frequency Response:

Chrome Tape :  20 - 18,000 Hz

Ordinary Tape :  20 - 16,000 Hz

Signal-to-Noise Ratio

Dolby ON :  58 dB

Dolby OFF :  50 dB

Inputs Impedance

MIC :  20 k Ω

AUX :  500 k Ω

DIN :  10 k Ω

Output Impedance

Headphone :  10 k Ω

Line Out :  2 k Ω

DIN :  2 k Ω

Semiconductors:  30 Transistors (includes 2 x FET), 21 Diodes

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

Dimensions (W x H x D):  440 x 120 x 242 mm (17-1/2" x 4-3/4" x 9-1/2")

Weight:  5,7 kg (12,6 lbs)