I meant MDF i was tired that day sorry, but its all prefrence i have a 97 Jeep Grand Cherokee and i have a 3/4" MDF Ported box with 5.80 cubic ft. in the back and it sounds good... though im pushing 1800 Watts RMS at 1 OHM i blew out the PLEXIGLASS window i put in to prevent me shattering the actuall glass window.. hahaa and the bigger the box the more air the subwoofers have to push around in a SEALED BOX therefore creating deeper bass. Sealed Boxes give you better sound Quality, However they do NOT get to be as lous as ported or vented boxes... Ported boxes are typically larger in size but the sound quality is not as good as a sealed box. Sorry for any confusion.
im going for quality not noise