Hey guys, I just wired in my sub / amp and now I get static thru my speakers. The static is a constant hum type noise. When I listen to a CD or the radio there is no static, but when I listen to my satellite radio there is static. The static gets louder as I turn up the volume. The amp is grounded to the chasis of my truck and the Satellite radio is grounded to the default ground on my CD player. Any suggestions?