Not sure if you went through with the purchase / install of the B-8ptd sub, but I installed it today and I'm VERY happy! It's literally night and day. Absolutely worth every penny. As you mentioned, you can simply install it under one of your front seats or (if you have a back seat) under the back seat. I installed it in my center console.
If you're still on the fence about this thing, I suggest you look no further and get on it. This is does what you describe and more.
Originally Posted by Firefyter-Emt
I am not looking to break windows, rattle my fillings out, or make teens look at me... Just need to add some sorely needed base to my 1995 YJ. I have the stock soundbar with some Polk Audio's as well as a set in the dash, but need to fill it out. Putting a box in the back is out of the question, and I don't really want to build a box into my back seat. My though was to build a tray out of metal that will mount to the drivers side seat risers and either hold the amp facing up, or facing down. (another question that I have is which would be better)
If I hang the sub facing down, I can design the tray to shed water and leave the airspace under the seat intact. Facing upwards will look nicer and the controls will be in the correct position. From what I understand a sub is a bit louder facing away from you though, and the water shedding ability alone is enough to make me design the mount as a tray to protect it.
With this said, it looks like the Sound Ordnance B-8PTD would be the best sub for the money... Any thoughts?