You can do this, it is referred to as horizontal bi-amping.
dual amp biwire Question?
Hi, I have a bottlehed foreplay preamplifier which is easy to add a second set of outputs on. Is it possible to remove the jumpers from the inputs of my Infinity Kappa 9's and run the bottom of the speakers with my QSC amplifier and the top with my Nikko amplifier? The QSC which is the more powerfull amp has volume controls. Thanks for any help,