My RS1-B's are about 28 yrs old. I originally bought the first pair of RS-1's from Lyric. Then I had them moded to the 1A's. The Arnie Nudel visited me and convinced me to upgrade to the B's. I dit that but also did some extra mods (somewhat similar to Sid's but not that extensive).
When I would visit shows or visit a friends home to hear their system I always felt that, as aged my system is) it still represented a great illusion of thew sound I appreciated.
My EMIMS have all been replace but my EMITS and woofers are all original.
A truly GREAT system (Sid's is better).
P.S. Good to see you back, Mark!
RWD Rick