I was talking to a local shop installer and he was telling me that in my car (Honda Civic), that a huge sealed box will get louder then any box w/ a normal port. He said the only thing that will get as loud in that type of car is a box around 3.5 cu ft. or bigger. I thought he was an idiot until he let me sit in his car and he cranked it up 3/4 of the way and it got stupid loud. I asked what he had and he said 2 15" Cvr's on 1000 watts. Any ideas or comments on this? Will that box really get louder in my car then a 3.2 cu. ft. box at 30 hz?
the best sealed box wont be as loud as a wellmade ported box. It also depends largely on the subs. Some really need to be ported while others love being sealed....