I've got the VP100 center and it also sound different than the M60's and QS4's on test tones. However my tweeter is working, but I am actually experiencing something different that bothers me. I get almost a scratchy sound in a lot of dialog. To minimize this I have to set my crossover for the center at 120. Anything below this and dialog is just bad. I'm seriously considering sending it back to be checked out.

Bill3508