Going to get the M60ti (main) , VP150 and M40ti (surround). Would they be undermatched if I choose to go with EP175?

I am not aiming for "chest pounding" bass, just want a decent supplement of bass for music and movies. The HT area is about 18' X 14' X 9' (L X W X H).

Using the M60Ti's as mains and the VP150 with the EP175 won't be a mismatch; indeed, the amount of bass you get may not only be "decent", but possibly indecent! (Don't worry--you can always adjust the subwoofer level control.) Seriously, I believe for the size of room you mention, the combo you've proposed will provide very solid and satisfying bass for music and home theater.

Regards,

Alan Lofft
Axiom Resident Expert