Biamp capable speakers usually means there is a high pass filter behind the mid/tweeter speaker input and a low pass filter behind the mid/woofer speaker input. Adding an electronic crossover will mean that you have both active and passive crossover components operating together. -- I use a theme and variation of the tube/solid state approach with a tube amp running two-way floorstanders (bi-wired) and a solid state running a sub. The floorstanders are run full spectrum while the sub amp has an active low pass filter as well as volume and phase control.
Tube/Solid State Bi-Amplification
I've read about people bi-amping using solid state for lows and tube amps for mids and highs. How is this practically done? I have bi-amp capable speakers but I only have one input on my preamp. What additional equipment would I need to buy and is it readily available? Not to mention, are the results worth all this effort? Has anyone done this??