yea i ran some diffrent rcas straight to amp

i have already i have a modiefied hand held speaker i use to test imputs i get same distorted blown sound out of just that channel or bridged right side is fine. hmmm ok well left side is postive in bridged mode maybe something grounding it out?

hello im new to this forum but not pg. my question is, what would cause 1 channel to sound fine, then the other make it soound like the speaker is blown, also same sound when bridged. i did all the normal checks and changes rca's ect... it is the amp for sure. my friend gave me this amp and i had it...