My rsx had a single pioneer 12" sub. I know alot of people don't favor pioneer but we get them through our shop and actually get a really good deal. I have an older (about 4 years old) 1100 watt 4 channel amp. I took the single 12 out and added the 2 12's. This is how I wired it.
now when my bass hits very hard at all it is like the amp turns off for a second and then turns back on and it starts working again. And, when I shut off my car, or just the stereo I can hear the subs make a noice. Like it sends a quick jolt of power to it... Does anyone know what I need to do? or should I take it to a real stereo shop.