Kellymack----I'm biamping a DIY set of speakers that are similar to Legacy Focus using a big 805/300B SET tube amp (45w) to drive the midbass drivers, midranges, and tweeters while I've used some big bruiser integrateds to drive the 2 12" woofers per side with the best results from a Consonance Calaf. I'm moved to pro audio amps with built in volume controls to pull funds out of my main system and, for these speakers, the results have been excellent. My sources have built in volume controls so that controls both amps and I can fine tune the bass with the volume controls on the pro amps.
But.....I tried the same on a pair of BG Corp 520DX loudspeakers, using a different tube amp on the ribbons and a Hafler P3000 pro amp on the bass drivers and it never sounded coherent. So, try it and see. If you do biamp, why would you go with a 30w tube amp for the bass drivers? I'd think almost any decent solid state amp would do a better job. YMMV and best of luck with it.
But.....I tried the same on a pair of BG Corp 520DX loudspeakers, using a different tube amp on the ribbons and a Hafler P3000 pro amp on the bass drivers and it never sounded coherent. So, try it and see. If you do biamp, why would you go with a 30w tube amp for the bass drivers? I'd think almost any decent solid state amp would do a better job. YMMV and best of luck with it.