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Old 06-29-2022, 08:51 PM
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wpoll wpoll is offline
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Join Date: Sep 2015
Location: South Island, New Zealand
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wpoll will become famous soon enough
Might be worth testing to see if the whine is in the audio leaving the source (H/U)....

And/or try powering the amp from a separate (spare) car battery, just as a test.
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2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
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