Hello

it seems to be pretty amusing what was recommended above. There is one thing you can be sure. After having the crossover repaired to met its orginial specs and woofers refoamed you should consider that your louspeaker is like new, so I would enourage you to use newer eletronics, becouse they surpass the preformance with the loudspeaker.

If you want to drive the whole loudspeaker with one amplifier I would recommend you the Modwright KWA 150 power amplifier. It sounds better than the Pass amp and even more natural in the mids and highs.

If you want to biamply I would certainly encourage you to use a vaccum tube amplifier for thr midrange and tweeter. I have tried the Balanced Audio Technology BAT 150 VK Se and it sounded beyond my dreams.

For the preamp I'm thinking about an Asthetix Calypso or a Modwright SWL 9.0Se.

This amps aren't cheap, but the Kappa 9's are close to the Genesis 3 in preformance and they sound excellent with that amps. It is often said that the Polydome produces harshness or shrillness, but once you hear them with newer eletronics or tubes in the mids and highs it sounds almost totally different. (airy and spaceous)

Hope that helps.
Stefan