I have one 15 inch sony explod sub 400 rms 1400 watts max in a sealed enclosure powered by 1200 watts at 4 ohms brigded... my question is if I was to get a dual enclosure with another explod what differences in bass and loudness would I notice... would it be worth buying? I wanna impress my freinds so the louder the better. Dont tell me this sub sucks it was recommended over the other subs in the shop including JL and RF 15s in the same price range and im very pleased so far. Also is dynamat a good way to improve bass response?