My friend and I just finished the first of two subs we've been working on. Its 14.3cuft,62" internal hieght and 24" dia tube w/tempest driver and AVA250 for power. The port is 10" dia and 35.5" long(17hz tune). We have a 3/4" MDF doubled for top and btm caps, one in the tube the other outside with 1/2" over hanging. Also have the sock material tucked inside top and btm. It's all caulked on the inside but I think it's leaking, bad noises coming from the driver, REALLY BAD!! Its diffently bottoming out. the amps dial is at about 3/4 power and my xover is set to 60hz @ the reciever(outlaw 1050)and set to 180hz on the AVA250. The only material we had handy @ test time was Toy Story 2 and it was going nuts on the opening buzz fly in. HELP!! I remember a thread that talked about leak checking but can't seem to find it.