I'v not heard the RM22XL, but I heard the Rm25xl at the Stereophile show in 2007 on the Moscode 402P hybrid integrated amplifier.
This was one of the best sounds at the show.
The Rm25xl had a really nice articulate sound and the bass was really good.
The Moscode used a passive volume control in the hybrid integrated amplifier.
I remember asking the guy at Joseph Audio about the 7 inch drivers he used in the Rm25xl speakers.
I really liked the way these drivers sounded.
He was telling me they were modified Seas drivers.
Another speaker i liked at the show was the Dali Grand speakers.