Thank you Chris.

for the timbre effect between cntr & front i'm aware of this and i may suppose that it's sould not be a such big difference between VP100 & VP150 and my existing front spkr JBL LX55 scince that they are with titanuim tweeter and almost the same efficacity of the Axiom VP's (i'll have to listen to it anayways to confirm).

Cambridge Audio 640r,M100,VP150v3,QS8v3,EP500v3