Pioneer SX 424

Maintenance repair

Japan 1972

Audio
Power 2 x 12 W 8 Ohms
Power 2 x 13 W 4 Ohms
Total harmonic distortion 1%
Intermodulation distortion 1%
Frequency response ± 3dB 20Hz - 70kHz
Power bandwidth 20 Hz - 45 kHz
Damping factor 40 8 Ohms
Phono input sensitivity 3 mV 50 kOhms
Mic input sensitivity 6.5 mV 50 kOhms
Sensitivity of line inputs 138 mV 100 kOhms

Phono input signal noise ratio 75 dB
Signal to noise ratio of line inputs 85 dB

Load Impedance 4 - 16 Ohms
Bass toi control -9 +9 dB at 100 Hz
Treble control +9 -6 dB at 10 kHz
Loudness +9,5 dB a 100 Hz, 5,5 dB a 10 kHz

FM
Frequency 87.5 - 108 MHz
Sensitivity 2.3 µV
3.5 dB capture ratio
Image rejection 50 dB
IF rejection 80 dB
Spurious rejection 70 dB
AM suppression 45 dB
Signal to noise ratio 65 dB
Mono harmonic distortion 0.6%
Stereo harmonic distortion 0.8%
Stereo separation 40 dB
35 dB stereo subcarrier suppression
De-emphasis 50 µS - 75 µS (FW)
Ingresso antenna 75 – 300 Ohms

AM
Frequency 525 - 1605 kHz
Sensitivity 15 µV
45 dB image rejection
Rejezione IF 35 dB
Signal to noise ratio 50 dB
Antenna interna in ferrite