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Becker Amplifier BE 6600

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I'm struggling to understand the factory M490 audio system in my '03 S. The head unit is a CDR23 and I have a CDC-4.

Specifically, I am interested in figuring out the amplifier: Porsche part no. 996.645.331.00, Becker model BE 6600. It is a MOST unit with a 2-pin optical input connector and a 20-pin input/output connector. Supposedly a 6-channel device.

Question is: Can anyone point me to a decoder for the 20-pin connector on this amp?



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  • 14 years later...

Hi guys. I know that this thread is somewhat dated, but does anyone know if the amp pins for the rear speakers are always active for this Becker 6600 amp? My car only has the dash and door speakers and I am trying to figure out how to get the audio out to rear speakers so that I can fit them. I have the CDR-23 radio and it has no active analogue audio outputs. I’m hoping the rear speaker pins on the amp are already active and it’s just a case of finding somewhere to buy the pins to put into the amp connector. 
Also, thanks Loren for posting this diagram here. I have scoured the internet for months trying to find this!



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