How much amp is enough amp for 9.x.6 in a 20x14 room?
I'm murdering my brain over this for I'm pretty sure no good reason, and need help.
Have a monoprice HTP-1, a CNAMPX-7x200, a CNAMPX-12x60, and a CNAMPX 16x60.
Goal is 9.1.6. Room is roughly 20.5 feet by 14 feet. Screen is 10 feet wide, have not decided on AR, but am leaning 16:9 though can be convinced otherwise. Plan is in-wall LCR, ceiling atmos, haven't firmly settles on the rest of the channels or subs. Am guessing subs need their own / dedicated sub amps / won't work right off of these amps.
The main issue is that with the Crestron amps, while the 7x200 will put out 300w/ch to 4 ohm speakers; the 12x60 and 16x60 will only either put out 90w/ch to 4 ohm speakers, or can be bridged (220w/ch), but the external bridging is apparently unstable / won't tolerate 4 ohm speakers.
Ultimately, the question is -- how much power do I need for the 9 channels?
I feel like I should be able to pick 2/9 channels and give them "just" 90w/ch; but am worried that this will goof things up.
Alternatively, I can try to get another 7x200, then I have LOTS of spare parts and way too many channels, but all 9 channels would get their own 200w/ch and then the 6 atmos speakers would get 90w/ch, and that should all be fine. But then I have 4 of these behemoths in the house, one that I probably didn't need to get at all, and there will be questions from key stakeholders.