i was looking into getting the Alpine PXA-H700 for my car.

If i was to connect my headunit to the dsp using the rca connection, how would i control the sub since it only has a front and rear inputs (no sub input) and my pioneer headunit has a front, rear, and sub rca outputs.

I would be connecting my carputer to the dsp through one of hte optical inputs.

Does this setup look feasable.