Audio Database

SIX
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
Music Power (IHF) : 130W (4 Ω, 1 kHz)
Effective power (single-channel operation) : 39/39W (8 Ω, 1 kHz)
(Both Channel Operation) : 34W + 34W (8 Ω, 1 kHz)
(Both channel operation, 20 Hz to 20 kHz) : 28W + 28W (8 Ω)
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
Output voltage Tape Monitor(Din):30mV
(Phone, Pin) : 150 mv
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)
<General>
External dimensions Width 424x Height 140x Depth 315 mm
Weight 13.2kg