I disagree with the comment about room interactions. Most planar speakers are dipole and actually are designed for room interactions. You send an identical sound wave into a wall or corner and it is irrelevant if that sound wave was generated from a planar or cone speaker. I agree completely with the comments about uniformity and ease of presentation, imaging. I also agree with enveloping sound stage without being ever being harsh and yes they need power and dBels for all that to happen. I've had visitors happily enveloped at SPL of 90 - 95 dB and never look at me like - what the hell. I didn't hear QUICK mentioned and especially in the mid bass there is nothing like them. The couch, chair and floor will vibrate - musically and instantly. Just don't expect anything to shake and rumble even with larger planars. But shake and rumble generally ain't music anyway!!
Do larger planar speakers produce more accurate sound?
Planar speakers generate sound pressure via vibrating membrane panels. The excursion of the membrane x radiating area= sound pressure. This would mean that for a given sound level, membranes have smaller excursion in larger planar speakers than in smaller ones. Does this mean that larger speakers will produce more accurate sound?
I am not talking about the obvious benefits of the larger speakers in terms of low frequency production, so let's not get into that.