Inputs and outputs

• AF input radio: The DSP amplifier receives audio frequency signals, left and right separated, via the radio for radio and cassette playback.
  
• AF input CD changer: Via a separate interface, the DSP amplifier receives the playback information in digital form from the CD changer. The signals are then processed in the DSP amplifier from digital to analog for playback.
  
• AF input telephone: The telephone input only controls the front low-range output stages.
  
• Control input radio: The DSP amplifier is switched on and off by the radio via the control line. OFF=0..6V, ON=7..Ubatt.
  
• Control input telephone: The DSP amplifier detects via the control line whether the telephone function is active. OFF=0..6V, ON=7..Ubatt.
  
• Speaker outputs: Each speaker is activated by a separate output stage in the DSP amplifier. By way of diagnosis it is possible to drive all speakers one after the other at a preset volume and different frequency depending on the speaker.