Originally Posted by Todd G.
I would say the RT-series speakers will serve you well. I’ve got an RT-series system in the main floor living room (RTi A7s, CSi A6, in-ceiling 70RT) and it’s great with a Hsu VTF-3 Mk5 sub rounding out the bottom end. I liked the Polk set up so much that’s what I installed in our basement theater (5.2.4) but with twin PSA V1811 subs.
Our in-wall side surrounds in the basement are the Polk 65RT speakers. I believe you’ll be satisfied with the smaller woofer. The same can be said for the in-ceiling speakers—my 70RTs perform great. Plus you’re not fighting above drywall interference issues as much with a smaller diameter speaker. The 70RTs need about 9” of depth, so consider speaker depth as well.
If you’re keeping your current sub I would recommend adding a second one (at the minimum) with a room that size. If you stick with the RT-series speakers (and your budget has room) you could allocate more money toward your subwoofer(s). Many like the BIC subs for the price. I think you’ll be much happier if you explore other internet-direct options and up your budget (Hsu, Rythmik, SVS, PSA, and others). Buy once, cry once.
As far as your rear ceiling speakers go, would the soffit block your sight line at all to those speakers when you’re seated? If not, you’re probably okay. If you feel you need to install the rear speakers in the soffit, install them in the bottom of the soffit and let your Denon’s room correction help. My front two ceiling speakers are a foot lower than the rear two due to a steel beam in that part of the room, but the front and rear speakers are the same vertical angle to the seating area per Dolby guidelines. Audyssey Room Correction helped get things right, but I also used the Dolby Labs guidelines for Atmos placement. If you’re still concerned about it, you could lose the back two Atmos speakers and move the front two closer to your seating per Dolby Labs’ recommended 5.X.2 Atmos configuration. Many people do it this way, but you wouldn’t want to add rear Atmos later unless you plan on moving the front speakers for the 5.x.4 configuration.
Best of luck with your space—sounds like fun!
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Wow, thanks for the very thorough reply, Todd. Let me respond to a couple portions...
Sounds like the RT series would suffice just fine and I probably would gain a whole lot from jumping to the LS series. Just what I was hoping to hear!!
I’m starting to question my choice of surrounds and ceiling speakers. Instead of the RC85/80 setup, I’m looking at just using MC80s in all six positions. The MC80s seems to have a bit better overall sound quality compared to the RCs and my OCD suggests there is something good to be said about uniformity of six matching speakers compared to four circles and two rectangles (which are different sized rectangles from the 265s up front). My brain is weird like that sometimes. I doesn’t sound like surrounds and ceilings need to have the “perfection” of sound you would be more concerned about up front. Would the MC80 doing well enough in the LS and RS positions even though they are technically supposed to be “in-ceiling” rather than “in-wall”? Regarding the 70RTs, I don’t have anywhere near enough vertical clearance in the ceiling to install those, which is unfortunate because I’ve heard nothing but excellent reviews about them!
In terms of the sub... I have to consider the WAF strongly here. With the PL200, anything higher than about 4/10 and I already feel the glare coming my way and I worry about her ocular muscles as the sharp snap and rolling of her eyes could cause great damage.
In the future, I may well consider adding a second sub and running them both at significantly lower volumes to improve the overall sound quality. Thus far, though, the PL200 hasn’t shown any problems filling the room without losing definition.
Finally, thanks so much for the response regarding the Atmos speaker placement. I’m honestly not sure if LOS would be blocked by the soffit, so I’ll need to check that out. If I can move the MLP back just slightly, I probably could avoid that, but I also want to take advantage of every single pixel on the 75” 4K screen. Going much beyond the currently-planned 13’ starts to get beyond the recommended viewing position. I would definitely put the rears on the bottom of the soffit, not the front. I *think* the Audyssey should be able to handle that without much problem, as you mentioned, if I did need to install them there. I definitely don’t want to go with 5.1.2 with the expectation of upgrading later. I want to run all the wires before finishing and get everything in place. Based on the Dolby recommendations, the ceiling placement for .2 vs .4 would mean I’d have to move the fronts farther forward and then dealing with patching the ceiling. No thanks. I’ll just do it all now.