Ok, so my fully loaded 18" BTL should be here on wed., I want to get started on the box in the next couple of days. But I have no hands on experience with this sub, and I don't like relying on a computer program. So, I need to know what size box/tuning I should be looking at for it, all info listed below.

18" Fully loaded BTL, powered by an MA Audio HK4000D @ 1 ohm, so roughly 3500ish rms. I don't listen to THAT much rap, but still want it to hit the lows.I listen to stuff with a lot of double kicks, which I don't want to sound really sloppy/mushed together.

So, cliff notes. BTL 18, 3500rms, and lots of double kick drums

Also, PLEASE do not reply if you do not know what you're talking about/have hands on experience.

Anyone? I want to get the specs. so I can design it tonight, and build it tomorrow.

What vehicle and what dimensions do you have to work with?

What vehicle and what dimensions do you have to work with?

It's a Jeep grand cherokee (suv).

I have plenty of room.A little over 8 cubes, after wood and port taken into account.I just need to know what I need to shoot for box size wise. I don't want the sub to bottom out, full tilt (so I'm leaning toward the smaller side) but I also didn't want to build this box and come out with sloppy ass sounding kick drums.

I might just pull a number out of my ass and try building it though, like 6cf. tuned to 33hz.