I am going to buy this sub to use for my computer but don't know what size of enclosure and port I would need to tune it around 30hz. It's xmax isn't given so I don't know what to do. I will be powering it with ~160 watts RMS. And here are its given specs: FS=47.75Hz Qms=7.334 Qes=.552 Qts=0.514 Vas=0.376 cu. ft. Re=2.653 ohms Le=0.157mH Spl=85.22 @ 1w/1m Here's a picture of this bad little thing: Thanks a lot guys!