I got a little side tracked from the sub box and started mocking up a little enclosure for the remote. It absolutely will not fit anywhere else, but right where it's going... I do like having the volume and bass knob right at my finger tips while my arm is resting on the armrest.
Obviously it won't be cardboard! I'll use some 1/4" plywood (of course) to make the structure and wrap it in vinyl upholstery to match the center console. The top will not show the MiniDSP logo, there will be an aluminum cover or faceplate to finish it off.