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      08-10-2011, 02:02 PM   #3
JCtx
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Drives: No BMW yet
Join Date: May 2008
Location: El Paso TX

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Sounds like a head unit issue to me. That happens sometimes with radio, due to reception, but if it's happening with a CD, USB, etc., it has to be the head unit. Amplifier, as its name implies, only amplifies the signals. Finally, remember EPS has a separate equalizer; did you check it? Could have been reset by a gremlin . Good luck.
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