sub install problem

I hooked up the amp and subs and for some reason all im gettin is like a heartbeat feedback through the subs, they just keep subbing like a heart beats, and will not sub any music, is it a bad ground? or rcas are gettin interference?

it's either a ground loop or you have the gain on your amp way too high.

whats a ground loop and how do you solve it, im using a hitron amp and some hollywood subs.. the gain is only about 40 percent.

How did you set your gain?  Is it matched to the output from your head unit?  Where is your head unit grounded and where is your amp grounded?

the head unit is or i believe is grounded through the harness, I am not sure, but i did notice that if i pulled out the ground from the amp and turned the system on i would get feedback in the regular speakers, and i do have the mach 460 sound system with the mustang so those amps are on, becuase I am using the remote turn on wires for those amps too. the amp ground is to the frame, but is it possible that a non grounded deck is causing this problem? thanks

Back up the bus, post up exactly what you have installed in this vehicle, back to front, make the post as detailed as possible.Top Secret, I can tell you but then my wife will kill me.

the vehicle is a 97 ford mustang gt, now it has the premium sound, the mach 460 setup. I did not rewire, so the factory system is integrated with the aftermarket deck. I have a pioneer dehp 6500. Now i dont know if the deck is grounded or not. I used the premade harnesses and it may or not be grounded. Now I want to add an amp and subs. A hitron 2 channel amp and 2 hollywood excursions. Everything hookedup im gettin a heartbeat feedback through the subs, they are not playing any music just doing a heartbeat feedback. I tried taking the ground from the amp and seeing what would happen, instead i got engine whine in the regular mids, so i then unplugged the rcas and that removed the whine. So is it that the deck is not groudned and when i ground the amp, its trying to ground the deck through the rcas? thats why im gettin feedback in the subs?