If anyone is interested in the near future, I want to attempt a hybrid between a series 6th order bandpass and a transmission line. Now this enclosure is going to be relatively HUGE. You're going to need a good amount of space, depending on the woofer size. You should be able to run this on full power of the woofer, the woofer will have loading.
You know, if you've got something like a spare 8, 10 or 12 just sitting around.
Alpine - C&D Tech - CT Sounds - Batcap - EA - eD- Rainbow