I have a old JBL P80.4 amp. 3 channels are fine, but 1 channel only outputs about 20%. It's not the speakers, I checked already.
Never thought about switching the rca's. Did switch them so it's not the amp. I'll check tonite to see if it's either the rca or the hu.
Thanks for the help boys. It's only the RCA cable. Thank god. :bigup: