I have an Alpine 4-channel headunit I'm using to power two speakers. (I'm using the sub-out to my sub enclosure).
I won't be using 4 speakers. I've searchedt this and turned up nothing, but could the front and rear channels on each side be combined to increase power output to each speaker? If so, how would it be wired?
Yep, the answer is no...and you would only run the front speaker wires from the headunit regardless of the speaker locations, then tape off the rear speaker wires.