I'd be glad to give you my preliminary appraisal. I have a Merak horn and twin 6.5" center and the MT66's. The center channel speaker is excellent. It has the narrower in the rear and wider in the front (top to bottom) design, and really impressed me. Dialogue is excellent, music quality is excellent. The MT66s are towers have a single 3/4" Titanium dome tweeters, and twin 6.5" woofers. The towers are as wide in the rear as the front and have a single front lower port. They look well made are rated at 92db sensitivity and with a range of 60Hz-22KHz. The MT66s are decent sounding speakers. Mine are not broken in yet, but clearly, they do not have the accuracy or punch of the M3s. I'd say the Merak Horn center speaker is a more accurate and impressive speaker than the MT66. I'm hoping that the MT66's make a decent side speaker for the M50 fronts which I expect to arrive tomorrow. I'm going to move the Mission 77ds monopoles to the rear. Will report.
