Almost any caps will be an improvement. I own many RS speakers, used to work at RS for years, and I can honestly say that most of their speakers use crap caps. There were exceptions, but mostly junk. SO, with that said, almost anything will be an improvement. I've rebuilt a few networks and the speakers always sounded better. How much so will depend on how bad the old caps were. So don't expect instantaneous improvement. Also, they do need a little break in time. What I used to do, just to see if I could tell, was repair only one, hook both up, then put on some tunes (preferably the radio) and WALK AWAY. Leave the room entirely and let the speakers play. I give them at least an hour, but can very. Upon return I'll set my system to mono OR if mono is not an option use a mono recording. Play that and chances are you'll hear a difference. You can't use a stereo recording due to the way stereo is mastered, usually for best "effect". Mono is as neutral as you can get so that you can listen to both speakers simultaneously with the same track. Good luck.
