Well I just received 4 15" Dayton DVC 385-88 drivers. I am going to build 4 ported subwoofers that are tuned to 19hz and are about 5 cu ft (internal) volume. I purchased an iNuke3000DSP to power all four and will be using DSP/EQ and purchasing measuring equipment to get everything integrated.
The four subs plus the VTF-15H should be pretty crazy, and hopefully the VTF-15H integrates well, otherwise I may have to sell it and build a few more subs.
Here is what the four subs look like in the room after I modeled them (note, this does not include the VTF-15H which I intend to keep and suspect it will add another 3db+ across the spectrum). Should have a system that will play at reference level from the seating position and will play cleanly well into the mid teens with room gain:
Am curious on thoughts from the good Dr. or others as to how they think the VTF-15 will play with these DIY subs.Edited by ack_bk - 12/4/12 at 5:22pm