Hi,
I recently bought a set of RS1b's to rob parts for my IRS Beta's. After getting them home and hooking them up, I couldn't go through with the cannibalization, they just sound too good, it seemed to be a sin. So they are relegated to the man cave. They do need a big room. The original infinity active crossover hummed so I replaced it with an Ashly XR 1001 which works great, you just loose the pseudo servo functionality of the original.
If you haven't replaced the EMIM yet, you can usually find them on the auction sites, just be patient for the right price. Mine had bad EMIT's on the rear of both, so I acquired some for around $50. The third EMIM down on each tower does most of the work so if that is the bad one, a replacement will make a huge difference. 1, 2, and 4 and 5, 6, and 7 are wired in series so if one goes (open) you will actually loose three.
If you take the time to position them correctly, and get all the drivers working, I am sure you will love them.
Mike
IRS Beta
RS1b
ESS AMT 3
Pioneer HPM 100
Klipsch KG4
Yeah I'm a collector........