Alright, first, I would like to introduce myself. My name is Andrew, and although I'm only 17, I like to think that I have an excellent knowledge in car audio, but not home audio. Car audio just seems a little pointless to me now, and I want that great movie sound in my room since soon enough I will be off to James Madison University, without my truck (that I paid for). I have a leftover 12" Orion XTR (svc 4ohm) http://orioncaraudio.com/xtreme12.html sub from a previous install, and I was wondering if I could use it for a home audio application. (i would pick up the P.E. 250 watt amp, and build myself a nice low tuned ported box) I've built plenty of ported enclosure, with circle ports, and with slot port (which is better for home applications?) I ran the sub in WinISD, and I get a pretty nice flat curve at 5.25 cubes after all displacements tuned to 25hz. One last thing, how much port area should a home application have? (I was thinking of doing a slot port with 30 sq in. but most people only have around 13 sq in with a 4in. port. Will it really matter how much port area for home audio? I'm sorry for the length of this post, but I figured why not get most of my questions answered at once, rather than having 6 different posts about each one. Thanks in advance to any who reply, and GREAT FORUM.