RM200
RX200
RM11
RX11

R could be for Radiator or Reference
M could be for main (as opposed to centre)
X could be for experience, excellent, exquisite, etc.
200 would allow for both higher and lower designations in future models
11 is simply the number of drivers & tweeters

RF200/11 where F could be for Field

RL200/11 where L could be for Linear

LFR200/11 this is obvious

LR200/11

LF200/11

FL200/11

M80s, VP180, QS8s, EP800 v3