My friends has an amplifier JBL, Running too 2 Rockford fosgate 10s. its an old model I don't knowthe model number I sold it to him for 20 bucks. but before it sounded nice bass was loud, and few times someone kicked the speaker wire out of the amplifier terminal and he told me it wasn't getting sound. iv reconnected it all for him. sounded good. but now like 3 months later they don't play at all. I played the subs on my amp. sounded good. I checked his connects on his amplifier power ground it was all good, remote good. it turns on lights green. I checked his high level input converter, nothing seemed wrong there. but its not giving out any sound at all. any ideas on what may be wrong here?
