DIY Subwoofer- other recommendations?

[Eric Z]

I building a new HT in my family room and heard about DIY kits for a subwoofer. I've heard a few people mention Parts Express and various Titanic MKIII subwoofer kits. Here's the 10" specs-

http://www.partsexpress.com/pe/showd...number=300-760

I am wondering if anyone has experience with the quality of this sub. I've never done anything DIY with audio equipment so I'm a little hesitant- especially because I can't audition it before I buy it.

I would like to spend as little as possible for this sub ($350 max) since this is for an additional HT, but of course get as good of quality as possible.

I currently use a Def Tech PS80 in my main HT and I'm happy with that- some say it's too small, not deep/tight enough, but it sounds good enough for me!

Any information is appreciated!

As always, thank you!
Eric

P.S. The room this is going in is a carpeted lower level family room- about 12x18. It only has one door opening in the rear of the room.