And, if you are like me, and want to save some cash, you can buy a pair of Treo's and 2wq subs and get 90% of a Quatro.
When I got the Treo's, I didn't realize that they share a similar footprint. But, now I realize that the Quatro is a bit deeper(due to the included sub) and it works better for me and my room- The subs can be moved to inconspicuous areas and still do their job.
I do know that John at Audioconnection has a pair of Quatro Wood's used, for sale. See the website.
B