Used ICs: ST6280 – LM258D – TDA1575T – TDA1597T – SDA4331 – TL0721DR – TDA1078A – RC4558 – HA12194 – HA12199 – MC68HC05C8 – MC68HC05B32 – MC74HC132M1R – LM258D – MC33079D – MC14551BC – TDA7342 – TDA1592
Audi Chorus - 7 646 243 380
Audi Chorus A8 - 7 647 243 380
Audi Concert - 7 646 248 380
Audi Concert A8 - 7 647 248 380
Audi Concert Navi - 7 647 249 380
Audi Chorus
This car radio can be operated with 2 passive front loudspeakers and of choice with 2 active rear loudspeakers. The switching-over takes place by means of the diagnosis bus.Ex-factory condition: Default values (via diagnosis bus)
Fader active
Rear loudspeakers connectable
Audi Concert
This car radio can be operated with 2 passive and 2 active loudspeakers or as a Bose sound system. In addition the unit can be switched to the US mode. The switching-over takes place by means of the diagnosis bus.
Ex-factory condition: Default values (via diagnosis bus)
Standard loudspeakers
Europe mode.
Exploded views
Connector pin assignment
Circuit Diagram (Schematic)
Main board
HF Module
Keyboard
Click on the schematics to zoom in
