On further research, it seems that the spectral distibution of music is around a 50-50 split around 250hz, and for a three way system, that is close to where the crossover would be between midrange and woofer. So I'm thinking it could be beneficial.
Passive biamping question
If I have a six channel amplifier with one power supply per two channels and say each channel puts out say 100 watts, if I biamp with two channels per speaker for the three front channels of a HT system will this be basically like having 200 watts per channel and will the frequency balance of the speakers remain essentially the same? Thanks.