Wayne Parham Messages: 18789 Registered: January 2001
Illuminati (33rd Degree)
Yes, an MTM laid horizontally is definitely what I'd consider being "doing it the wrong way." I mean, you can make something like an MTM arrayed horizontally, but the crossover points have to be so low the nulls are very widely spaced. This isn't the way the small ones are made, because drivers small enough to fit can't be crossed low. So they're designed for convenience, to fit in the space constraints. A layout like that is worse than no speaker at all. Besides, it is different than the left and right mains, so the tonal character shifts as you pan side to side, through the center channel. Bad juju.
I would suggest a pair of three π or four π speakers with flanking subs. Something like this:
four π loudspeakers with flanking subs at LSAF 2009
three π loudspeakers with flanking subs at LSAF 2011
three π loudspeakers with flanking subs in living room