SANSUI SIX
¥ 107,000 (around 1972)
Commentary
This high-end stereo receiver is equipped with an amplifier and tuner section that is close to the field of high-end machines with Sansui's technology.
The main amplifier section uses a fully connected OCL pure complimentary service and a constant current drive system to prevent degradation of distortion characteristics at large and small outputs.
As a result, high-quality sound with little distortion is achieved in both large and small sounds.
The preamp section uses an NF type equalizer circuit with three stages of carefully selected low-noise transistors, and a rotary switch is used for the tone circuit.
The tuner and preamplifier use a stabilizing power supply to stabilize the voltage, and the main amplifier uses a constant current drive system and a two stage differential amplifier circuit that is stable against power supply and load fluctuations.
To protect the transistors and speakers, a newly designed relay circuit and four short-cut fuses are installed to ensure safety.
Equipped with a 4-channel adapter terminal that allows you to enjoy 4-channel stereo.
If you don't use this feature, you can connect a tape deck to record, play, and reprint your tapes.
You can connect a noise reduction adapter that reduces the noise unique to tape and allows for comfortable recording and playback.
The pre-amplifier and main amplifier sections can be used separately and can be developed into a multi-amplifier system.
Equipped with low and high filters to reduce motor ground noise and record scratch noise.
It is also equipped with a loudness switch that is effective at low volume.
There are six speaker outputs with Route 3, A, B, C, A + B, A + C and OFF.
In addition to the balanced 300 Ω FM antenna input, there is also a 75 Ω terminal for coaxial cable, which is effective for use in long distances and noisy locations.
It is also equipped with a muting circuit that can shut out noise between stations.
Model Rating
Type | FM/AM Receiver | ||||
FM Tuner Section | |||||
Receiving frequency | 76 MHz to 90 MHz | ||||
Sensitivity (IHF) | 2 μ V | ||||
Total harmonic distortion factor | Stereo : not more than 0.5% | ||||
Signal-to-noise ratio | 63 dB or more | ||||
Selectivity | 60 dB or more | ||||
Stereo separation | 35 dB or More (400 Hz) | ||||
<AM Tuner Section> | |||||
Receiving frequency | 535 kHz to 1605 kHz | ||||
Sensitivity (bar antenna) | 50dB/m | ||||
Amplifier Unit | |||||
Rated output |
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Total harmonic distortion factor | 0.3% or Less (Rated Output, Main Amplifier) | ||||
Cross modulation distortion factor | 0.3% or Less (Rated Output, SMPTE, 70 hz : 7 khz = 4 : 1, Main Amplifier) | ||||
Power Band With (IHF) | 10 Hz ~ 50 kHz (8 Ω) | ||||
Frequency response (main amplifier) | 15 Hz to 40 kHz, ± 1 dB | ||||
Hum and noise | 90 dB or more (IHF, main amplifier) | ||||
Input Sensitivity / Impedance (1kHz) |
Phono (maximum allowable input 100 mV, THD 0.5% or less) : 2.5mV/50k Ω AUX, Tape Monitor, 4 ch Adaptor : 150mV/50k Ω Main Amp : 800mV/50k Ω |
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Output voltage | Tape Monitor(Din):30mV (Phone, Pin) : 150 mv |
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Tone control | Bass (3 dB step) : ± 15 dB (50 Hz) Treble (3 dB step) : ± 15 dB (15 kHz) Loudness : + 10 dB (50 Hz), + 8 dB (10 kHz) Low Filter : -10dB (50 Hz, 12dB/oct) High Filter : -10dB (10 kHz, 12dB/oct) |
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<General> | |||||
External dimensions | Width 424x Height 140x Depth 315 mm | ||||
Weight | 13.2kg |