I'm starting to think out my next subwoofer build, using a Mach 5 Xmass 18 driver.
I have one in a large ported box built into my stage (link in my sig), and it rumbles great, and has some nice output.
My goal for this sub is to fill in some of the higher subwoofer spectrum that...
Just wanted to start a thread for my subwoofer build project.
It is heavily influenced by a build I saw from another forum from 2005.
I purchased a couple of the XMASS 18 drivers by mach 5 audio ($75 each with local pickup).
LINK for more info
Here's the Particulars of the drivers: