Professional DSP audio cuts out

Justjeff1972

Member
 Nebraska
Afternoon all. Wondering if anyone has had this issue. Recently the stereo in my 2012 (Professional DSP system) cuts out. This happens on radio and Bluetooth. I lose sound from all speakers. It almost seems like a bad capacitor in the amplifier. If anyone has had this happen before, can you point to what the source of the issue is? Does anyone know of an audio repair shop that works on these amplifiers in the US? I'm not sure how easy it is to check the system output from the amp with a multi-meter since everything connects with a harness, short of using a pronged probe that penetrates the insulation (not desirable). The other COA would be to swap out the amp with a direct replacement aftermarket. I'd prefer that to a used stock amp because I'd at least get a warranty, but that is an expensive experiment if it isn't the amp.

Modification wise, I've added a CarPlay adapter and an aftermarket amp that powers an 8" Kicker solobaric subwoofer in the trunk passthrough. I doubt it is the amp and speaker setup because those wouldn't affect the rest of the speakers. At most it would cause the factory subwoofers and my aftermarket speaker to drop out. It could be the CarPlay adapter but, since it is happening on radio too, I think that is unlikely.

Thanks,
Jeff
 
677 amps go bad quite often…so it’s a repair shop if you can find one or a good second user unit…I do have one but one in the US will be cheaper..
 
Thanks. Figured that would be the answer. Any feedback on the Alpha 1 from Bimmertech?
Afaik they use some warmed over re badged products…quality levels are ok…paying for marketing ..maybe you benefit from their bundled deals…pedantically the DSP should be tuned for the speakers / cabin combination…that’s a purist view from someone whose done this twice with both 676 and 677 versions ..
 
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