DOH!!! why wasnt I here earlier.... BASS MECHANIC.... STFU .... Im takin sides with diabolic... Sure the ported boxes are louder! But who wants to listen to a **** mess of blabering bass, that sounds like total ass? Now mr. bass you say you have been makin boxes for 15 years? Well I hapen to have 2 JL W3V2-D4's and a 500/1 JL amp... I bought a ****load of MDF cause i was curious how much of a diferance there was between ported and sealed boxes.
After me and my brother (A profesianal cabnet maker/woodworker) built 5 boxes 3 ported and 2 sealed, all to the volume posted on the instructions in the subwoofer boxes... We discovered the sealed boxes sound a WHOLE hell of a lot cleaner... Just my 2cents.