After my last experience with building the two sealed 3.9 cu ft enclosures and incorporating the mono BASSIS.. I figured it time to explore how the SoundSplinter 15" RL-p driver would do in the vented design. My first impressions right out of the shoot is very nice..nothing not to like. It stands 39" tall and measures 20"W X 20"D 7.5 cu ft enclosure, with a tuning point that I think will come in at close to 17 Hz.. if not slightly lower? It's not what I would call pretty being that it's still in it's rough MDF form, but I had to give it a run to see how much effort (if any) that I wanted to put into the finish process. Build time 16 hrs not counting HD or tracking down the port...I'm keeping track. With the few hrs I had to demo it with using GLADIATOR, MATRIX RELOADED and EAGLES "hell freezes over" for material..I'll most likely be associating it (in my mind anyway) with some of the better options I have ran. I would like to pay tribute and a special Thanks to Ilkka Rissanen for simming it up for me along with your suggestions. The first thing that comes to mind in doing the vented design this time around, although I have ran plenty in the past...is the free gain coming from that 6" port...heck the driver is hardly moving while putting out 'substantial SPL...I figured, but none the same with running sealed for awhile.. As you can see, I love long leads.