Ed, I don't know if the weakness you noticed is anything more than the normal dropoff all speakers have way off axis. It may also be the response irregularity that most horizontal centers are prone to. It's interesting that previously the VP150 did have a MTMTM arrangement(flat, not curved), then Ian changed it to the present TMMMT. Note Ian's interesting evaluation of various centers in a 3/30 reply to a "M22 Front..." thread on HT. Yet another arrangement which aims to lessen the problem of widely separated mids is W T/M W, but I might argue that this is little more than a disguised small vertical center, the arrangement I prefer. Again, I'm not sure what you noticed, but the more common complaint isn't just a narrow response pattern, but an uneven one.
