in which case the OP has to wire in series and present amp with a final 4ohm loadThe AP3000D is only stable down to 2 ohm
this....dont take advice fromwhat do you want? 1 ohm? or 2? im pretty sure you cant get two out of dual 4's, but if you wire the subs in parallel, then parallel together, that will make 1 ohm. get duals 2's to get a final load of 2 ohms. audiopipes should be 1ohm stable.