Congratulations for the setup. Of course I am biased, because I have a pair of CMT-340SE as my mains and the L12 as well

My room is not specifically treated, however it has wall to wall carpet, a rug on top of it between speakers and listening position, an overstuffed couch and accordion-type fabric blinders on the three windows in the room. The highs coming out of the CMT-340 are just perfect to my ears and the mids, especially voices, are excellent.

I use this setup also for movies and could not be happier, especially for what I spent (or maybe for what I did NOT spend! ). Despite not having matching center and surrounds, I am not left wanting in term of dynamic, impact and overall tonal balance.