You can download the Vandersteen in room compensation CD
off their website and see how far off you are
Take a SPL meter and measure Average 70 db rt ch track 1- 11 and left ch 15 - 26 and see what you
have now with your existing speaker.
The Vandersteen treo will work close and Quatro has the room compensation feature built in.
JohnnyR Vandersteen dealer