Sansui AU 777

Repair Maintenance

Japan 1969

Power amplifier
Output power 2 x 30W 8 Ohms
Total harmonic distortion 0.5%
Intermodulation distortion 0.8%
Power bandwidth 20 Hz - 50 kHz
Frequency response (1W) ± 1dB 20Hz - 100kHz
Stereo separation 50 dB
100 dB signal to noise ratio
1 V final input sensitivity
damping factor 15 to 8 Ohms

Preamplifier
1 V pre-out level
Maximum 4 V pre-out output level
Total harmonic distortion 0.1%
Frequency response +0.5 -1 dB 20 Hz - 70 kHz
Phono signal to noise ratio 80 dB
Signal to noise mic ratio 85 dB
Line noise signal ratio 85 dB
Phono input sensitivity 2 mV 50 kOhms
Phono input sensitivity 3.5 mV 50 kOhms
Sensitivity of line inputs 140 mV 100 kOhms

Bass tone control ± 15 dB 20 Hz
Mid tone control ± 5 dB 1.5 kHz
Treble control ± 50 dB 20 kHz
Loudness +8 dB 50 Hz, +2,5 dB 10 kHz
Bass filter -26 dB 50 Hz 12 dB / oct
Filtro alti -15 dB 20 kHz 12 dB/oct