I have two JL 10W3 D4's running off of a JL 500/1 amp. When these subs were in a plain rectangular box, they sounded great. Well, I came across a great deal on a pre-fabbed wedge box, I bought it. It is withing JL's specs for volume, but the subs bottom out quickly and sound anemic... does the lack of depth behind the subs in this type of box hurt performance??