You'd need a pcb with a DAC on it, and a way of getting the signals out of the box. If you did this, we'd program up the DSP appropriately for you :)

Cool. I'll get right on it.

Just kidding. There's no way I'm going to THAT much trouble. It'd be easier for me to wire a remote control knob for the subwoofer. "When all else fails, use brute force."

Tony Fabris
Empeg #144