My recommendation would be to use a Jolida Tube integrated on top, like the JS502b or 801, and go pre-out from there to another bass amp(Parasound's make excellent bass amps) for the bass terminals on those speakers, and biamp em!!!
You'll get superb top end for little, and superb dynamic bass! You can loop any pre through this setup. good luck
You'll get superb top end for little, and superb dynamic bass! You can loop any pre through this setup. good luck