Kenwood KR-4050 Ampli-tuner
(1975-1976)
SchematicSPECIFICATIONS TECHNIQUES
Tuner:
Tuning range FM: 88/108 Mhz
Sens IHF: 2.0 µV
Selectivity: >50 dB
Stereo Separation: >40 dB/1Khz
Tuning range AM: 535/1605 Khz
Sens IHF: 25 µV
Amplifier:
Power output: (RMS) 2X20w/8 ohms
Freq response: 22Hz/35kHz
Output Imp: 8 ohms
Damping factor: 50
THD output: 0,7%/8 ohms
Input Sens Phono: 3 mV
Input Sens Tuner: 200 mV
Input Sens Aux: 200 mV
Input Sens Tape In: 200 mV
SNR Phono: 60 dB
SNR Tuner: 64 dB
SNR Tape In: 64 dB
SNR Aux: 64 dB
Dimensions: 450x140x380mm
Weight: 10.2 Kg
| Transistors | Equiv | Other |
| 3SK30 | NTE132 | |
| 2SC1000 | BC184L-2N3707 | KT3102V-NTE199 |
| 2SA620 | BC214L-2SA701 | 2N4058-KT357G |
| 2SC381 | BC182L-2N3710 | KT375D-NTE107 |
| 2SC535 | BFY90-2N2857 | KT358B-NTE107 |
| 2SC945 | 2SC1815-BC237 | KSC945 |
| 2SC785 | BF185-2N3983 | KT358B |
| 2SA733 | BC212L-2N4061 | KT3107K-NTE290A |
| 2SC458 | 2SC1844 | 2SC945-NTE85 |
| 2SD220 | BSW66-2N4001 | KT605A-NTE128 |
| 2SC941 | BF241-NTE289A | KTC941 |
| 2SA621 | BC214L-2N4058 | NTE106 |
| 2SA743A | BSW24-2N907A | BD520-NTE185 |
| 2SC1212A | BD169-2N4923 | BD237-KSD794 |
| 2SA626 | BDX94-2N3795 | MJ701-NTE219 |
| 2SD180 | BDY24-2N3448 | BD293-NTE87 |
| 2SC1213A | BSW66-2N4001 | KSC2001-NTE289A |
| 2SA673A | BCW37-2N2904 | NTE290A-KSA643 |
| 2SC1345 | 2SC1815-BC414 | NTE199 |
| Integ Circ | Equiv | Other |
| µPC555A | NTE703A | |
| Diodes | Equiv | Other |
| 1S2076 | NTE177 | |
| 1S1555 | NTE177 | |
| STV-3 | ||
| 1S338T | NTE144A | |
| V03C | NTE125 | |
| 1N60 | NTE109 | |
| MV13 | NTE177 | |
| V06B | NTE125 | |
| Capa µf | Volts | Quantity (56) |
| 3300 | 35 | 2 |
| 470 | 63 | 1 |
| 330 | 16 | 1 |
| 220 | 35 | 1 |
| 220 | 6.3 | 1 |
| 100 | 35 | 2 |
| 100 | 16 | 1 |
| 100 | 10 | 7 |
| 47 | 50 | 2 |
| 47 | 10 | 5 |
| 33 | 50 | 2 |
| 10 | 63 | 1 |
| 10 | 50 | 1 |
| 10 | 25 | 16 |
| 10 | 16 | 1 |
| 3.3 | 50 | 2 |
| 3.3 | 25 | 2 |
| 1 | 50 | 8 |