Difference between revisions of "Telefunken MA 1"

 
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{{not template compliant}}
 
'''
 
'''
 
== Technical Data =='''
 
== Technical Data =='''
 
(taken from the service manual)  
 
(taken from the service manual)  
  
Nominal Impedance: 4 Ohms   
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Nominal Impedance: 4 Ohms   
Nominal Output Power: 2 x 50 W RMS   
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Nominal Output Power: 2 x 50 W RMS   
Peak Output Power: 2 x 80 W
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Peak Output Power: 2 x 80 W  
Distortion Factor: 0.1 % at 1 kHz (45 W/4 Ohms),   
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Distortion Factor: 0.1 % at 1 kHz (45 W/4 Ohms),   
  typ. < 0.5 % at 40 W/4 Ohms, 20-16000 Hz  
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  typ. &lt; 0.5 % at 40 W/4 Ohms, 20-16000 Hz  
Power Bandwidth: < 10 Hz ... > 40 kHz for K <= 0.7 %  
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Power Bandwidth: < 10 Hz ... >40 kHz for K &lt;= 0.7 %  
Phono Deemphasis: acc. to DIN 45 547   
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Phono Deemphasis: acc. to DIN 45 547   
 
Nominal Input Voltages/   
 
Nominal Input Voltages/   
 
Nominal Input Impedances/   
 
Nominal Input Impedances/   
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  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: 1 mV/kOhm at tape input and 1 V
+
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: > 60 dB at tape/aux   
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S/N ratio acc. to DIN 45 500: &gt; 60 dB at tape/aux   
  > 60 dB at phono   
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  &gt; 60 dB at phono   
Channel Separation: > 55 dB at 1 kHz   
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Channel separation: &gt; 55 dB at 1 kHz   
  > 40 dB at 10 kHz   
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  &gt; 40 dB at 10 kHz   
Input Separation: > 80 dB at 1 kHz   
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Input Separation: &gt; 80 dB at 1 kHz   
  > 65 dB at 10 kHz   
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  &gt; 65 dB at 10 kHz   
Tone Control: Bass: +13 to -13 dB at 40 Hz   
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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: 0 to -40 dB   
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Balance Control: 0 to -40 dB   
Noise Filter: 7 kHz turnover frequency, 12 dB/oct.  
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Noise Filter: 7 kHz turnover frequency, 12 dB/oct.  
Semiconductors: 15 integrated circuits   
+
Semiconductors: 15 integrated circuits   
 
  25 transistors   
 
  25 transistors   
 
  28 diodes   
 
  28 diodes   
 
  37 LEDs   
 
  37 LEDs   
Mains Supply: 220/110 V, 50/60 Hz   
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Mains Supply: 220/110 V, 50/60 Hz   
Dimensions: 298 x 114 x 250 mm
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Dimensions: 298 x 114 x 250 mm
  
Mehr unter:
+
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 12:18, 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>