You do not necessarily need an external crossover to bi-amp. You can just use the internal crossovers. This would be a passive bi-amping configuration. Your speakers may or may not be capable of this type of biamping. Please check the documentation that came with your speakers.

The external crossover would be active biamping and is more efficient since you only send the appropriate frequencies from the x-over to your amps. This will work well if you can bypass the internal crossovers on your speakers.

Biwiring uses a single amplifier for each channel and runs a seperate speaker wire to the tweeter and midrange/bass drivers. Therefore you only use two channels of amplification for biwiring whereas you use four channels (or more) for both passive and active biamping.

For either biamping mode you would need to split the preout from the 1050 using some kind of splitter such as the one in the link in my post above.

[This message has been edited by morphsci (edited April 12, 2003).]