This ain't good. I got an Orion P-series 12 sub in my 2000 F-150 & I got to doing some real research on what kind of box to build for it. It is DVC 2ohm. I got the 2 ohm because I have an Autotek SX1200X and I wanted to achieve good, clean power to the sub with DECENT SPL. I was going to build a ported box....can't do it at almost 14" long (the port) in a 1.3 cu.ft box! Now, my better judgment is telling me to start over with a different sub. Anybody like Orion?