I have an all Theta system (CBIII-HD, Intrepid), Synergistic Research active speaker cables and interconnects, and am using an Oppo95 for transport. I recently sold my Genesis 6.1 mains and center, replaced them with two LA-800's and a CC220 center, and two Bag End 18" infrasubs. My dealer in Irvine California area got me "hooked" on the BG line arrays- They are just rediculously fantastic. Now, the Genesis 6.1's were no slacker either, and the LA800's carry the finesse of the Genesis but with a massive wall of sound-stage. Movies are over the top. 2ch is like you are there in concert.
I built two custom 2.9 cu ft cabinets for the LA800's using a CDL (Constrained Damping Layer) approach to eliminate any cabinet resonances. I mounted them on-wall but they soon will be in-wall once the front partition wall is built. the inner portion of cabinet walls are 1/4" cement board, outer cabinet is 3/4" baltic birch, finished in gloss white. interior cabinet walls are braced between front baffle and rear wall every 14". interior walls are lined with 1/4" felt, and there is about 1.5 lbs of combined pink fiberglass and polyfill. The results are quite dramatic with a very accousitcally inert box and any internal resonances are Q'd up quite high and absorbed by the felt / plofyfill / pink fiberglass. Sounds **excellent**, but I think I'll have to pick up a pair of Theta Citadels to really drive them properly.
The CC220 is just temporary but I am amazed how great it sounds for movies. much more intelligible dialogue than the Genesis center. I think this center would be a good piece in just about any HT system. - I will be getting the upcoming CC500 which is the new center channel mate for the LA800's - should be out soon. Will also be getting the BGX four subwoofers. The Bag End subs are awesome- I had to get *something* for now that sounded almost as good as the subwoofers in the Genesis 6.1 main towers. Genesis knows how to do subs! Bag end's sound great and keep up nicely with the LA800's for music. But they are just huge- I had them painted gloss white with white grills so they look more like modern end tables. Wife is pleased (for now - lol).
I strongly recommend BG Radia for sound. Don't let the inwall thing fool you. These are some of the best speakers you will ever hear. and, the service and support from BG Radia is nothing short of amazing. I have never experienced such a high level of help and service from a manufacturer. Makes me feel even better about my purchases and invvesting in their equipment. Plus, my BG dealer (Sound Video and Automation in Irvine) has just been great as well with getting me set up an dialed in. Bill (owner) knows his stuff!