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      09-01-2008, 08:48 AM   #2
kaigoss69
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Drives: '08 335i
Join Date: Jul 2008
Location: JAX

iTrader: (5)

The hiss origin does not seem to be related to your PDX amp. If you can't figure out what's causing the problem, you may be better off re-installing the factory amp and then feeding the balanced speaker-level outputs of the OEM amp into the PDX. While not an optimal set-up, I'm pretty sure your noise problems would be eliminated, assuming the hiss was not audible before you swapped amps.

Tschuess