The problem with that is I need to send the a separate signal from the LFE channel to the sub, and the last channel of IO on the other unit would be used simply for center channel EQ.
I know you can only run one plugin on each minidsp, but does it allow basically 2 instances of the plugin at the same time, or can I run it as just one 4-way crossover and use both inputs routed to different outputs?
So input 1 feeds outputs 1-3 for one tower, and input 2 feeds output 4 for my sub or center channel.
It would seem silly to have extra IO on a DSP that cannot be utilized, but given the price, and that MiniDSP is a consumer product, I would not be to surprised by it.