Sansui 1976 - 1978 Component HiFi

Sansui System

1976-1978 Sansui Component HiFi System

Going against the trend throughout the late 60s and 70s Sansui produced mainly black aluminum fascias during this period. This system comprises of a 1976 Tuner and Amplifier and the 1978 components comprise the turntable and speakers.

Being an entry level level high fidelity component system provides it provides ample power suitable for apartments and average size lounge-rooms for performances at moderate volume levels. I found this quite a fun system that I enjoyed listening to a lot.

Components:

1976 AU-2900 Amplifier

1976 TU-3900 Tuner
1978 SR-232 Turntable
1978 SP-X3300 2-Way Speakers

AU-2900 Amplifier

The Sansui AU 2900 is an integrated stereo amplifier with ample power (17 watts, both channels into 8 ohms, at 1000Hz) and dramatically low-distortion, clean tone characterise the most moderately-priced of the AU Series.

It’s design is also based on the true complementary OCL power circuit, with dual-transistor differential amp in the initial stage.

Dual plus/minus power supply for all major circuits gives you interference-free, stable tonal quality at all reproduction levels.

Features:

Low-noise phono equaliser
Stepped tone controls
Outputs for 2 sets of speaker systems
Complete range of controls, high filter and loudness switches, source selectors and input/output terminals

Specifications
Power output: 15 watts per channel RMS into 8Ω (stereo)
Frequency response: 10Hz to 40kHz
Total harmonic distortion: 0.3%
Damping factor: 50
Signal to noise ratio: 90dB (line)
Channel separation: 57dB (MM)
Dimensions: 400 x 120 x 240mm
Weight: 5.7kg
Year: 1976

AU-2900 Tuner

Specifications

FM Section

Tuning Range: 88 to 108 MHz

Sensitivity: 2,0 μV (IHF); 1,1 μV

Total Harmonic Distortion: less than 0,3% (Mono); 0,4% (Stereo)

Signal-to-noise Ratio: better than 70 dB

Selectivity: better than 60 dB

Capture ratio: less than 2,0 dB

Image Frequency Rejection: better than 55 dB at 98 MHz

IF Rejection: better than 80 dB at 98 MHz

Spurious Response Rejection: better tham 70 dB at 98 MHz

Spurious Radiation: less than 34 dB

Stereo Separation: better than 40 dB at 1 kHz

Frequency Response: 30 to 15,000 Hz

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

FM Antenna Attenuator: -20 dB

AM Section

Tuning Range: 535 to 1,605 kHz

Sensitivity (Bar antenna): 53 dB/m at 1,000 kHz

Selectivity (±10 kHz): better than 30 dB at 1,000 kHz

IF Rejection: better than 80 dB/m at 1,000 kHz

Output Level

Output: 775 mV at FM 100% modulation

Dolby: 250 mV at FM 100% modulation

General

AC Outlet: unswitched Max. 150 watts

Semiconductors: 13 Transistors; 1 Zener Diode; 1 FET; 3 ICs; 2 LEDs; 6 Diodes

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

Power Consumption Rated: 5 watts

Dimensions (W x H x D): 400 x 120 x 240 mm (15¾ x 4¾ x 9½ inch)

Weight: 5,0 kg (11 lbs) Net

***

SR-232 Turntable

Specifications

Type: two-speed, belt-driven, automatic return
Speeds: 33 and 45rpm
Platter: 308mm aluminium alloy die-cast
Motor: 4-pole synchronous
Wow and flutter: less than 0.07%
Signal to noise ratio: better than 50dB
Rumble: better than -58dB
Tonearm: statically balanced, s-shaped, tubular tonearm
Effective length: 215mm
Overhang: 10mm
Cartridge weight: 4 to 8g
Cartridge: SC-60 induced magnet or SV-43 dual magnet type
Dimensions: 430 x 145 x 356mm
Weight: 5kg
Year: 1978