1lownoma

no need for a four channel amp on the subs. you can either run a second battery or get a battcap.

ok so where is this build page hiding at??????????????

I think your are on the right track with the sub going bad. check the resistance of the coils and make sure they are not too far out of wack.

I dont exactly agree with that, I am running a 8 gal and an air zenith @ 200psi and if I play for anymore that like 20 sec I cant get my front back up to move, But i do agree with the 5 gal expansion and nitrogen aspect of yours.