I am considering running two ST-70's in a true bi-amping mode. The crossover's in the speakers would be completely removed, and replaced with a "low" and "high" input. I would have the option of running the ST-70's vertically or horizontally. In vertical mode, each amp is driving a speaker, whereas in horizontal mode, each amp drives lows or highs. Between my stereo preamp and ST-70's, I would need to add a passive or active crossover. I really like the sound of the EL34's, and would like a little more power than one ST-70 provides. My questions are.
1. Has anyone tried this? If so, did you like it? Pros or cons?
2. Should I use vertical or horizontal bi-amping. Vertical results in both amps working in a similar fashion. Horizontal results in one amp being dedicated to lows (the other to highs). This would allow me to set up one amp specifically set up lows, with a set of tubes to complement that arrangement.
3. What should I use for the crossover? Passive, active, computer driven dsp, etc.