@jpan - I was shocked at the level of improvement I received once I add Vicoustic Acoustic Cinema Round Acoustic panels to my walls. I already have 18 HFT's scattered around. The panels aren't even in a position where they would be most effective as they are 12 feet off the ground. Being able to move your panels around is excellent. I was trying to convince my wife to allow me to buy two VicTotem Absorption / Diffusers on the basis that I would move them out of the room when we had company....she said NFW. I can tell you the Vicoustic panels were a game changer for me.
Synergistic Research HFT's
Not to open up a can of worms but I am reaching out to people who actually have tried the SR HFT's or Black Box. I am building a new house and my two channel room is my great room / kitchen. The dimensions are 20'W x 40'L with 16' cathedral ceilings. This is not the best 2 channel room but it worked well in my last house. So the question I have are there any tweaks that I should be considering to improve the overall sound performance? I know the obvious answer is Acoustical Panels but that won't fly in my house. I already have all of the Perfect Path Technologies products for my system. I already have SR Blue Duplex's but might change to the orange. So now I am looking at what I can do to improve the sound in that kind of room without Acoustical panels. The rest of my system includes: Canary Audio Grand Reference 2 mono amps, C1800 Pre-Amp, InaKustic 3500P Conditioner, Lumin X-1 Dac/Streamer. My cables are all upgrades also. I have been looking at the SR HFT's and Black Box. Comments?