Pioneer SX-424 Receiver
(1972-1974)
Service ManualTECHNICAL SPECIFICATIONS
Tuner:
Tuning range FM: 88 to 108 Mhz
Sensitivity IHF: 2.3 µV
Selectivity: > 60 dB
Stereo Separation: > 40 dB - 1Khz
Tuning range AM: 535 to 1605 Khz
Amplifier:
Power output: (RMS) 2 X 12w/8 ohms
Frequency response: 20Hz/70kHz +/-3dB
Output Impedance: 4 or 16 ohms
Damping factor: 40
Total Harmonic output: 1%/8 ohms
Channel separation: 35dB
Input Sensitivity Phono: 3 mV
Input Sensitivity Tuner: 180 mV
Input Sensitivity Aux: 180 mV
Input Sensitivity Tape In: 180 mV
Signal to Noise Ratio Phono: 75 dB
Signal to Noise Ratio Tuner: 85 dB
Signal to Noise Ratio Aux: 85 dB
Signal to Noise Ratio Tape In: 85 dB
Dimensions: 431 x 146 x 347mm
Weight: 7.9 Kg
| Transistors | Equiv | Other |
| 2SC1344 | BC109-2N5210 | NTE199 |
| 2SK19Y | 2N5485 | NTE132 |
| 2SC763 | BC214-2N2214 | NTE234 |
| SE3001 | 2N2857 | NTE108 |
| 2SC738 | BFX73-2N918 | NTE107 |
| 2SC1318 | BCW36-2N4410 | NTE128 |
| 2SC710 | BC182L-2N3710 | NTE123AP |
| 2SC711 | BC184L-2N3707 | NTE199 |
| 2SC1061 | BD241-2N6293 | NTE152 |
| 2SA720 | BCW37-2N2904 | NTE290A |
| 2SD313 | BD587-2N5298 | NTE152 |
| Capa µf | Volts | Quantity (44) |
| 2200 | 50 | 1 |
| 1000 | 25 | 2 |
| 330 | 25 | 2 |
| 220 | 16 | 1 |
| 100 | 25 | 3 |
| 100 | 16 | 3 |
| 100 | 10 | 2 |
| 100 | 6 | 2 |
| 47 | 25 | 1 |
| 33 | 16 | 1 |
| 22 | 25 | 2 |
| 4.7 | 25 | 1 |
| 3.3 | 50 | 6 |
| 1 | 50 | 2 |
| 1 | 25 | 6 |
| 0.47 | 50 | 5 |
| 0.47 | 25 | 1 |
| 0.22 | 25 | 2 |