Originally Posted by desertdome
The 212RT is not a tower version of the 212HTR. It has completely different woofers that are used in the Captivator 212-Pro
. The 212RT is tuned a little lower than the 212-Pro. The 212RT and 212HTR will have different roll off and phase response in the bass.
I don't like horizontal center speakers. Since you are using a 65" TV, I would recommend a JTR Slanted 8HT-LP above the TV and two Single 8HT-LP located with their centers about 18" down from the center speaker. Mount the 3 speakers and TV so they are even with the front cut out. Frame in the TV and and cut out and cover with acoustically transparent speaker grill cloth or similar. Your TV will then float on a black wall with concealed speakers behind it. With an 80 Hz XO to a pair of JTR subwoofers, your front sound stage will have excellent dialogue intelligibility, smooth panning, and great dynamics.
Don't all the RT vs RM speakers have different rolloff and phase response in the bass high pass filter?
Perhaps not different woofers, though.
That said, I agree that 3 matching speakers is ideal.
Since the ultimate destination was going to be an AT screen, and he plans to run subs, perhaps 3x 212HTR would be a good compromise.
While running a center 212HTR horizontal isn't as good as running 3 vertical, the coaxial mid-tweeter should be as good as any horizontal speaker.
While the S8s are reportedly excellent, no one has put them in the same league as 212s.
If the placing a speaker below the TV was the long term plan, that's a really good point about 3xS8s vs better but non-optimal LCRs (non matched and/or horizontal center.)
But it's not the long term plan.