a couple of questions first . . . why do you want HT in both rooms? and what is your budget for room 2 HT capability?
3 responses Add your response
Well here's my 2 cents - based on setting up my own "cave".
I assume you're happy with the JC2, and the A21. I would build around that. You may want to allocate some of your budget to buy new/upgraded speakers for your "cave", and leave the Studio 60's in room 1. If you do that build around the new speaker choice. For amps, the A21 probably will driver anything, you'll need an amp for the rears and center. I have found I like all stereo amps rather than multi-channel. I'm using identical stereo amps all around, and the amp driving the center speaker only runs on one channel. I use a stereo amp on each of the front l/r speakers running vertical biamp - so I have 3 ammps sitting in the front, one in the rear. I have used 5 mono-blocks - one on each speaker in the past which was also great. And I uses a monoblock on the center speaker (ie instead of the stereo amp using on side) which is also fine - provided it matches well with your main L/R amp. You'll also need to select a subwoofer - that choice may depend on the L/R main speakers you choose.
After you select those, you can use what $ is left for a Pre/Pro, and run it in passthru on your JC-2 (does the JC-2 have a HT Passthru mode?). I'm using an old Lexicon MC-1 - doesn't have the latest video switching but sounds great. Depending on budget you can go more money and newer technology. For my money I like the older stuff fine.
p.s. - you can see my setup on my "system page"