Telefunken MA 1

== 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

Mehr unter: [1]