The Krell amps will work just fine, assuming they work just fine. If they haven't been back to Krell for a tune-up in those 20 years you may find they are no longer up to spec. The Salon 2s like powerful amps, but any Krell will likely drive them satisfactorily for medium-level rock, as you say.
I doubt you'll need a sound processor. I have lots of glass too, and I'm fine without one. I do run the Salon 2 tweeters one notch lower than center on the level control in the connector box on the back.
Depending on your room and the placement of the speakers you may not need a subwoofer. The Salon 2 has great bass response. In my room the best positions for imaging stunk for bass, so I got a Velodyne DD18+ and I've been beyond thrilled. Ecstatic is more like it. The combination is to die for. You'll need a subwoofer with a high-pass filter or an active crossover like the Bryston SUB10 with to roll-off the bass at about 60Hz to the Salon 2 woofers. If your decorator is involved you could use two small 12" sealed subs, like the SVS SB13-Plus, and place them behind the Salon 2s. The SB13's are nice because they're powered and have a high-pass filter.
I doubt you'll need a sound processor. I have lots of glass too, and I'm fine without one. I do run the Salon 2 tweeters one notch lower than center on the level control in the connector box on the back.
Depending on your room and the placement of the speakers you may not need a subwoofer. The Salon 2 has great bass response. In my room the best positions for imaging stunk for bass, so I got a Velodyne DD18+ and I've been beyond thrilled. Ecstatic is more like it. The combination is to die for. You'll need a subwoofer with a high-pass filter or an active crossover like the Bryston SUB10 with to roll-off the bass at about 60Hz to the Salon 2 woofers. If your decorator is involved you could use two small 12" sealed subs, like the SVS SB13-Plus, and place them behind the Salon 2s. The SB13's are nice because they're powered and have a high-pass filter.