Asher, that would not be true bi-amping. Besides, why do you think you need to bi-amp your 80's anyway? True bi-amping can be costly to get the appropriate equipment, and you would have to remove the passive crossovers in the 80's, which probably is not a good idea.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85