System consists of an Alpine CDA-9811 head unit and a SoundStream XS-10 sub being driven by a little Alpine sub amp that gives around 300w give or take @ 2ohms.
I used a pre-built Q-Logic box but lined the inside with fiber fill so that it wouldnt sound like quite as much ___. What does everyone think?

 

Looks like a box!!
Seriously, good job, just makes me really feel the need for bass!!

 

well i have that sub. got it at the flea market for 80 and it was better than the JL i had suprisingly. i got rid or it and went to a 15" polk momo. ur gona want more base afterlistening to that for a wile. i always kept bottoming that sound stream. i would have sold u mine for like 30 or 40.