Quote:
Originally Posted by jameslrock
No one would even consider fiddling with the knobs. When they were first set up I took a photo of each so I could memorialize the settings. They have always been the same until the major output increase.
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Ok. Then, Have you tried switching the cables (connecting the left output to the right sub and viceversa)? If the problem switches to the other sub, then the issue could be your preamp.