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AUDIO AMPLIFIER: PHILIPS HF308 MONO-END
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on Picture to Enlarge
| Frequency | 20
- 45000 Hz within 1 dB
10 - 80000 Hz within 5 dB |
| Tubes | EF
86 - Pre/Amp
ECC 82 - Tone ECC 83 - Fase- and Pre/Amp EL 86 - (2x) Balance EZ 81 - Rectifier 7121 D - Indication Lamp |
| Output Level | 10
Watts - 0,15 % Distortion by Harmonics
12,5 Watts - 1 % 14,5 Watts - 5 % |
| Distortion | Total
distortion by harmonics at 10 Watts power to speaker:
25 Hz : 0,25 % 1000 Hz : 0,15 % 20000 Hz : 0,2 % |
| Sensitivity | Needed
power for 10 Watts to speakers
Radio (I) ................................... : 450 mV Taperecorder (II) play ................. : 1,5 mV ----------------------- record .............. : 5 mV Crystal Pickup (IIIa) ................... : 50 mV Magneto-Dynamic Pickup (IIIb) .. : 3,5 mV Microphone (IV) ....................... : 3,5 mV |
| Disturbing Level | Hum
/ Noise to 10 Watts:
Radio (I) ................................... : -75 dB Taperecorder (II) ........................ : -75 dB Crystal Pickup (IIIa) ................... : -55 dB Magneto-Dynamic Pickup (IIIb) ... : -55 dB Microphone (IV) ......................... : -60 dB |
| Input Impedance | Radio
(I) .................................... : 1 M Ohm
Taperecorder (II) ......................... : 1 M Ohm Crystal Pickup ........................... : 47 K Ohm Magneto-Dynamic Pickup (IIIb) .... : 68 K Ohm Microphone (IV) .......................... : 56 K Ohm |
| Output Impedance | 800 Ohm |
| Speakers | Philips 9710 AM |
| Fuse | 400
mA delay by 220 Volts
800 mA delay by 127 Volts |
| Alternating Current | 220 or 127 Volts |
| Power Consumption | ca. 60 Watts |
| Dimensions | 280(W) x 103(H) x 240(D) mm |
| Status | Working |
| Service
Manual
User Manual |
Yes
WANTED |
| Visit Website | .. |
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| SHEETS: CONSTRUCTION / DIAGRAM / SCHEMATIC |
| DIAGRAM 1- SCHEMATIC VIEW |
| DIAGRAM 1/2 - SCHEMATIC VIEW PARTS |
| DIAGRAM 2 - CONSTRUCTION VIEW |
| DIAGRAM (3) |
| DIAGRAM (4) |
| DIAGRAM (5) |
| DIAGRAM (6) |
| DIAGRAM (7) |
| DIAGRAM (8) |
| DIAGRAM (9) |
| SPECIFICATIONS (1) |
| SPECIFICATIONS (2) |
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