I'm happy with the output of a couple 8's. Before building a box for a 12" sub I'd like to buy a couple RE Audio rex8 subs. I have an old RE8 and its still kickin and always sounded great.
I figured four 12's would have a lot more output than one 10"...not just a little. Then again I'm tuned to fuckin' 33. Low notes kill. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif