In process of getting my 15" zcon reconed to a 12" but I need to build the enclosure.  Car is an "04 Grand prix trunk is painted with GT MAT which I've come to realize works real well.  Sub back port back is what I'm trying to accomplish for now.  I'll experiment later, but have come to realize that sub back port back sounds really well wamming off the trunk in the American cars I've owned. Running a group 34 up front with 2 XS power 975s in the rear.  Stock alt will be replaced with a mech 270 in the near future.  So I need to build this box to a 3k setup.  Sub will be ran on a mmats m3000.1 with 2 runs of welding wire with knu kollossus filling the gaps big 3 exc. 

 

I want to tune to about 34 Hz..with that being said and the power I will be running, I think that 3.0 cu ft slot port will do the trick for this 12.  I know these subs like big air.  But I'll be setting gain to ear and temperature.  14 sq inches of port per sounds good to me?  any objections?

 

Let me know what you think..

 

I will probably run the perfectly working 15" in a 4.0 cu ft box on the back seat and abuse it hard before I recone it to a 12.  (or post a wall socket vid for your enjoyment)

Throw the 3krms on them like it! Just make sure you don't clip the hell out of it then you would smoke it!

will post vids.  Have everything ready but ran into a bit of a delay as I'm getting body work done on my car right now.  I hit a deer in the early AM cause I didn't have bumps =[