Your preamp output will feed the input of the electronic crossover in stereo
the crossover will divide highs and lows providing stereo outputs for two
separate amplifiers. Some like the lows in mono and the crossover will
often have a mono sub out.
The crossover will have level controls for balancing the highs and lows, the
amp does not need on board volume controls. many professional power amps
have no volume controls.
the low frequency amp always needs much more power. It will take 6 speakers
to equal the volume of one horn or tweeter. For this reason, two unmatched
stereo amps will work with no problem at all. The tweeter amp can be much
smaller.
Its always better to bypass passive internal crossovers and direct wire
to the speaker when using an electronic crossover.
My home hi fi is triamped. Sometime im going to make it four way.
biamp, triamp... lowers the distortion and you are nolonger stuck with the
sound of your speakers, you can change the sound to your liking!

"Art M" wrote in message
news:0slcc.189553$1p.2197791@attbi_s54...
Would someone please give me a simple overview of Bi-amping and it's pros
and cons. I know a bit about it but I am not super clear on how one would
go about it with two distinct amps (vice bi-amping a multi channel amp to a
two chanel system).

How do you match the amps output? How do you split the audio signal into
both amps? If there is a good article on the whys and hows please point me!

Thanks
Art