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What does this mean?Got your polarity in sync? Phase cancellation kills ranges on the odd man out
What does this mean?
I just swapped the two RCA's no change, then I swapped the speaker wires at the amp, no change.
So two speaker outputs at the bottom of the amp are bridged and the other two channels are both around right way.It means your -/+ need to be the same on all outputs from a single source like an amp or a deck. Ideally the correct polarity but at a minimum the same. If you have an odd man out it'll behave as you describe, quiet and missing ranges