That speaker is not that large, and may not need tons of current for very satisfying listening levels.. The advantage of bi-amp is too balance out a top heavy speaker for the most part, loaning an entire channel to take on the bass drivers to relieve that saturation to the highs and mids.. It will be very dependent on the amps, and speakers reaction to it whether it will be worth it.
Honestly its tuff to find Biamping always better, but in some situation it could sound better. It would not probably hurt at all if using 4 exact same channels, however might not have enough advance for you to keep the investment into it. However definatley ACTIVE bi-amping, which will be at least removing your passive Crossovers from the Woofer section can be a whole different thing, and yes if you active the whole speaker you can juice more out of the finer points of discrete channels.
However again the cost and the needed equipment, Tuning, and Time can outweigh the the "Is it worth it factor". Try it first with 2 identicle amps simply hooked thru the passive crossovers. see if you wish to proceed, its the only way, you have to hear the investment or forget it.
