recently got the mmg-c to complete system with 970/7075; the mmg-c manual says you need to use a unique wiring configuration: split L/R main pre out, send one L and one R back to mains and use another splitter to recombine the other L/R and send it to the sub. this setup with preamp settings at no sub, large L/R, and small Center. am wondering if it is actually neccessary to do this with splitters or if it can be done with input configuration settings (No!!!! not more wires!?!?!). magnepan says this is neccessary to fill a hole between sub and main (mmg-w) frequency responses, providing more balanced bass. anyone out there have this setup wired as magnepan recommmends or have it set up via input config?