Pioneer SX-850

Maintenance repair

Japan 1976

Power amplifier
Power 2 x 65 W 8 Ohms
Power 2 x 85 W 4 Ohms
Total harmonic distortion 0.1%
Intermodulation distortion 0.1%
Frequency response +0 -1 dB 7 Hz - 90 kHz
100 dB signal to noise ratio
Damping factor 25 8 Ohms

Pre-amplifier
Phono input sensitivity 2.5 mV 50 kOhms (max 200 mV)
Mic input sensitivity 6.5 mV 50 kOhms
Sensitivity of line inputs 150 mV 100 kOhms
Total harmonic distortion 0.05%
Uscita pre out 1 V 100 Ohms
Line frequency response +0 -1 dB 10 Hz - 50 kHz
Bass tone control ± 7 dB, ± 10 dB 100 Hz (sel 200-400 Hz)
Treble control ± 7 dB, ± 10 dB 10 kHz (sel 2.5 - 5 kHz)
Bass filter 30 Hz 6 dB / oct
Filtro alti 6 kHz 6 dB/oct
Loudness +6 dB 100 Hz, +3 dB 10 kHz
Phono signal to noise ratio 70 dB
Line noise signal ratio 90 dB
Muting -20 dB

FM
Mono sensitivity 1.8 µV
7.1 µV stereo sensitivity
Mono signal to noise ratio 72 dB
Stereo signal to noise ratio 67 dB
Mono harmonic distortion 0.15%
Stereo harmonic distortion 0.3%
3.5 dB capture ratio
Image rejection 50 dB
IF rejection 80 dB
Spurious rejection 70 dB
AM suppression 45 dB
Line frequency response +0.2 -2 dB 30 Hz - 15 kHz
Selectivity 80 dB
Spurious rejection 100 dB
Image rejection 85 dB
IF rejection 100 dB
AM suppression 55 dB
Stereo separation 40 dB
62 dB stereo subcarrier suppression
Ingresso antenna 75 – 300 Ohms