Stereo modules in XPA 11 vs BasX A4

[originalffd]

I'm setting up an 11 channel Dolby Atmos system (technically a 7.1.4). If I were to do the XPA 11, it would have 3 of the high power single channel modules (states 300W per channel but I think that drops to around 250W per channel with all three being used). The other 8 channels would be the stereo modules rated at 65W each.

My other option would be to do an XPA 3 channel (275W with all three being used) and run two of the BasX A4s for surround and height speakers at 100W.

I can't seem to find pros/cons of the A4 vs the stereo modules in the XPAs. Which would be better for a Dolby Atmos setup?

I should note I currently have the BasX A3 (140W/ch) running my LCR and the BasX A7 (90W/ch) running surrounds in a 7.1 setup. Open to suggestions on an upgrade! Using a Marantz AV7706 processor pushing Klipsch RF-7 III (L/R) & RC-64 III. Center.

[leonski]

I would BALLPARK an SPL estimate using your speakers sensitivity, size of room, number of drivers

I'd GUESS that at an average of 25 watts X 11 channels? That's pretty darn loud in most normal spaces. Your RF-7/3 have a
factory spec of 100db......That's 1 watt - 1 meter.....or whatever. Proper watts with speaker like that will put you out of your own house.