Ok so I finished an install on a friends 01 Camaro, Hifonics BX1500D amp, 2.0 Farad cap, 2 Kicker L7's, PAC line converter with remote trigger, and stock monsoon with CDT speakers. Now when I turn the radio off I get a hard bass hit from feedback untill the amp turns off from the subs. I still have to re-hook up the line converter to the factory subs instead of the rear speakers as I didnt think about the amp not having a crossover as I can hear the subs producing voice. Any input is helpful

Also the ground is good, RCA's are away from power wire. System sounds great when playing... Just this turning off bullshit