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      09-04-2013, 07:04 PM   #72
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Drives: 2015 320i
Join Date: Apr 2005
Location: Ft Lauderdale, Florida

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Originally Posted by badsha View Post
I have exactly same problem! Same Hifi harnes from Technic and xd600/6 hissing noice Even at minimum gain and at muted.

Even i can hear scartching noise sometime in te rear soeakers... Im out of idea...
"Scratching" noise is caused by loose connection somewhere in the amp (inputs/outputs). Hiss is the noise floor of the amp just amplified over an acceptable level.

Some batch of PDX amps used to produce hiss at minimum gain/no audio. My personal solution for that was to replace that particular PDX amp. Problem solved.

Bad connection at the harness RCA will produce a different kind of noise, "scratching", pops, low volume level or simply no sound at that particular RCA/speaker output.
-2015 F30 320i, Imperial/Oyster, 8AT: August 2014 ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone