Re: Atmos height speakers for a system that uses RAAL tweeters.
I had Energy RCs with aluminum domes...if anything with most content they sounded recessed or laid back...never harsh. I reckon it depends on several variables... design and room acoustics...come to mind.
My mains being soft dome...made things a bit simpler but even within the same material it could be cumbersome from a design stand point to find a happy medium. Essentially I looked at proven architectural design from mfg like paradigm, PSB, Focal and MA....looking at the specs and sensitivity of each design....for surround or moreso Atmos implementation....I don't think you'd not find a suitable design for this application...from any of the listed above...with this hobby we often obsess over trivial things.
Speakers 5.1.2: TitanTowers v2 & STC(RAAL v2), MA CP-WT&CT260
Sub: Funk Audio 18.0 SantosRW
Source: Denon X3800H, Oppo BDP 103D, UBK-90 4K & LG B9 65"
Office 2.0: Philharmonic True Mini(coming-soon), Fosi TB10D via Wiim mini.