Hi guys, I'm undertaking a DIY subwoofer project to complement some Magnepan MMGs. The goal is to have a subwoofer behind each of the MMGs. I have an Adcom GFA-545 to power the MMGs matched to a Rotel preamp and a Dynaco Stereo 400 rated at 200x2 at 8 ohms and 300x2 at 4 to power some subwoofers. I've been contemplating the 12" Dayton DVCs or 15" Dayton Quattros. Which will offer a better integration of these two speaker systems? Your help is greatly appreciated.