Gunbei - I am an accoustical novice so take my theory with that in mind. It just seems to me there are several questions to ask when it comes to speed it is not simply the diameter of the woofer but rather the diameter and its interplay with the the type of material and design of the woofer and the type of magnet and design. And again, using my intuitive sense, I would suspect that a magnet powerful enough to drive the DD-18s would be more than ample to drive the DD-15s with speed and precision. I sure hope so.
Gmood1 - Stereo subs aren't in my cards for now but I will try to listen to such a setup if I get the chance.
Gmood1 - Stereo subs aren't in my cards for now but I will try to listen to such a setup if I get the chance.