Difference between revisions of "Telefunken MA 1"
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== Technical Data ==''' | == Technical Data ==''' | ||
(taken from the service manual) | (taken from the service manual) | ||
| − | Nominal Impedance: | + | Nominal Impedance: 4 Ohms |
| − | Nominal Output Power: | + | Nominal Output Power: 2 x 50 W RMS |
| − | Peak Output Power: | + | Peak Output Power: 2 x 80 W |
| − | Distortion Factor: | + | Distortion Factor: 0.1 % at 1 kHz (45 W/4 Ohms), |
| − | typ. | + | typ. < 0.5 % at 40 W/4 Ohms, 20-16000 Hz |
| − | Power Bandwidth: | + | Power Bandwidth: < 10 Hz ... >40 kHz for K <= 0.7 % |
| − | Phono Deemphasis: | + | Phono Deemphasis: acc. to DIN 45 547 |
Nominal Input Voltages/ | Nominal Input Voltages/ | ||
Nominal Input Impedances/ | Nominal Input Impedances/ | ||
| Line 17: | Line 18: | ||
1.6 mV / 47 kOhm / 33 dB (phono) | 1.6 mV / 47 kOhm / 33 dB (phono) | ||
Output Levels at Nominal | Output Levels at Nominal | ||
| − | Output Power: | + | Output Power: 1 mV/kOhm at tape input and 1 V |
input voltage at aux input | input voltage at aux input | ||
14.14 V at speaker output (4 Ohms) | 14.14 V at speaker output (4 Ohms) | ||
0.42 V at headphone output (8 Ohms) | 0.42 V at headphone output (8 Ohms) | ||
| − | S/N ratio acc. to DIN 45 500: | + | S/N ratio acc. to DIN 45 500: > 60 dB at tape/aux |
| − | + | > 60 dB at phono | |
| − | Channel | + | Channel separation: > 55 dB at 1 kHz |
| − | + | > 40 dB at 10 kHz | |
| − | Input Separation: | + | Input Separation: > 80 dB at 1 kHz |
| − | + | > 65 dB at 10 kHz | |
| − | Tone Control: | + | Tone Control: Bass: +13 to -13 dB at 40 Hz |
Treble: +11 to -11 dB at 15 kHz | Treble: +11 to -11 dB at 15 kHz | ||
| − | Balance Control: | + | Balance Control: 0 to -40 dB |
| − | Noise Filter: | + | Noise Filter: 7 kHz turnover frequency, 12 dB/oct. |
| − | Semiconductors: | + | Semiconductors: 15 integrated circuits |
25 transistors | 25 transistors | ||
28 diodes | 28 diodes | ||
37 LEDs | 37 LEDs | ||
| − | Mains Supply: | + | Mains Supply: 220/110 V, 50/60 Hz |
| − | Dimensions: | + | Dimensions: 298 x 114 x 250 mm |
| − | + | More at: | |
| − | [http://john.ccac.rwth-aachen.de:8000/telefunken/ma1/index.html] | + | [http://john.ccac.rwth-aachen.de:8000/telefunken/ma1/index.html]</10> |
Latest revision as of 11:18, 27 August 2008
Template:Not template compliant == Technical Data == (taken from the service manual)
Nominal Impedance: 4 Ohms Nominal Output Power: 2 x 50 W RMS Peak Output Power: 2 x 80 W Distortion Factor: 0.1 % at 1 kHz (45 W/4 Ohms),
typ. < 0.5 % at 40 W/4 Ohms, 20-16000 Hz
Power Bandwidth: < 10 Hz ... >40 kHz for K <= 0.7 % Phono Deemphasis: acc. to DIN 45 547 Nominal Input Voltages/ Nominal Input Impedances/ Overdrive Reserve (4 Ohms): 180 mV / 470 kOhm / 33 dB (tape)
180 mV / 470 kOhm / 33 dB (aux) 180 mV / 470 kOhm / 33 dB (tuner) 1.6 mV / 47 kOhm / 33 dB (phono)
Output Levels at Nominal Output Power: 1 mV/kOhm at tape input and 1 V
input voltage at aux input 14.14 V at speaker output (4 Ohms) 0.42 V at headphone output (8 Ohms)
S/N ratio acc. to DIN 45 500: > 60 dB at tape/aux
> 60 dB at phono
Channel separation: > 55 dB at 1 kHz
> 40 dB at 10 kHz
Input Separation: > 80 dB at 1 kHz
> 65 dB at 10 kHz
Tone Control: Bass: +13 to -13 dB at 40 Hz
Treble: +11 to -11 dB at 15 kHz
Balance Control: 0 to -40 dB Noise Filter: 7 kHz turnover frequency, 12 dB/oct. Semiconductors: 15 integrated circuits
25 transistors 28 diodes 37 LEDs
Mains Supply: 220/110 V, 50/60 Hz Dimensions: 298 x 114 x 250 mm
More at: [1]</10>