I'm running the Velodynes in an 11' by 11' and I am extremely pleased.

I'm one of those old farts (my main speakers are 25-year-old studio monitors that I refuse to replace) who avoided buying a sub for as long as possible because I was afraid of the boomy sound it would add to music. After auditioning the Velodyne against several other subs, I found it to be the most discreet sounding speaker I heard in this size and price range.

I only wish I had brought it online--could have saved $100!

Good luck.