Re: Mixing Sierra 1"s with NRT Center?
The problems that having different tweeters can create is not worth the trouble, IMO. I think it is much more satisfying to have everything match perfectly, rather than have one speaker sounding different/better than the others. It can be distracting. I'd stick with the same tweeters all around. Even the tweeter on the HTM 200 SE is pretty awesome and is leagues ahead of any tweeter I've heard from Klipsch, JBL, and those kinds of speaker companies.
-Alex
PS4/Nvidia Shield --> Emotiva XMC-1 --> Emotiva XPA-5 --> Ascend Acoustics Sierra Towers and Horizon Center w/ RAAL tweeters (L/C/R), HTM-200 SE (Surrounds), 2x Rythmik F12 subwoofers