I just hooked up a system in my buddys explorer. He has two 12" Rockford Fosgate Punch HE's and a Power 501Bd amp. Got it all hooked up and sounds great. Then he wanted me to hook up another amp for the 2 Rockford Fosgate 6x9's. Got everything hooked up, light on the amp is green, but no sound what so ever coming from the 6x9's.
Got the 6x9's working now. Sound good with the engine off. When I start the truck, nothing but engine noise from the 6x9's, but the subs still sound good.
keep the gain set no higher than one quarter of the way up. take the capacitor out of the circuit and see if that stops the noise. the cap isn't doing anything to help you anyway to be honest.
are you saying run seperate power and ground wires for the smaller amp and leave the cap out, or can i still keep the power wire hooked up to the cap and just run a seperate ground wire, because, unlike Infinity, I have always ran the power and ground wires to the cap and never had a problem.