I recently got 2 12'' Kicker Comp VRs in a vented box. They are the 4ohm DVC versions. I have them wired to a 2600 Monoblock 2ohm stable Interfire amp. The way that I understand crutchfield's illustrations is that I can only wire these subs in either 1 or 4 ohm, therefore I have them wired in 4 ohm so I don't blow the amp. My question is that it was pounding pretty good earlier this morning, then I noticed slight rattle out of what I thought was the subs, found out it was my door panel, but after changing the amp settings I now can't get the subs to play good. When it drops low it sounds like the subs are losing power, and now the higher frequencies on some songs don't sound as good either. Can someone please point me in the right direction? I will do whatever is needed to fix the issue if it means not having to have it professionally done, the only thing that I have absolutely NO clue about is when it comes to the DMM and the gain, so I don't knwo what I am doing there. Thank you very much.