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      09-09-2011, 03:01 PM   #31
VP Electricity
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Drives: E91 XDrive
Join Date: Jan 2008
Location: portland oregon

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Originally Posted by cdgatti View Post
In amp installation instructions I have seen, it says to make sure your power wire from the battery to the amp stays at least 10 cm away from any other car harness wiring, I would check for this also make sure your power and ground wires are being run along side any of your input signal wires from the head unit to the amp.
That is not causing hiss. The concern there is RPM-related whine.
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