Under-seat sub [Archive] - JKowners.com : Jeep Wrangler JK Forum

: Under-seat sub

02-01-2009, 10:57 AM
I saw a post on making a box to mount a 10" sub under the back seat of a TJ on jeepz.com and was wondering if this is possible on a jk? The guy used a shallow-mount pioneer 10" and built the box himself, and also said you could probably fit two in there. I want to do something similar in my '08 2-door, but don't have the technical knowledge to asses the situation with the back seat. Anyone have any info?


02-01-2009, 10:04 PM
Nobody? Any input at all?

02-01-2009, 11:13 PM
dont think its doable because of all of the airbag sensors hanging down under there - takes up a lot of room.
I dont think theres enough room to get the airspace needed

02-05-2009, 06:51 PM
I was thinking about putting a sub under my back seat... I have a 4Dr... when the seat folds down... they are flat on the floor... under the front... like venom says... too much wire and sensors.

02-05-2009, 07:06 PM
Here is what I did in my TJ.





02-07-2009, 09:43 AM
That's actually a pretty f'n good idea. Sure that seat wasn't as comfy afterwards though. How was the output from in there?

02-07-2009, 09:55 AM
Sound was AWESOME. My box was just about 1cf which was perfect for the sub I used. It fired down with about 3" of space between it and the floor so it worked well.

I left about 3" of foam on the top of the box so the seat was actually perfectly comfortable. Passengers actually did not know they were sitting on the sub until you told them.

There were 2 compromises that should be noted. Since the bottom 3" of the seat are now solid wood the seat does not compress when sat on. So the passengers sit about 3" higher than they normally would. So for tall people they come really close to the top.

The seat is REALLY heavy and does not fold and tumble well. So it is either in or out. Don't plan on just "whipping" it out whenever you want to.

02-18-2009, 06:53 PM
I am getting ready to put 2 10" in my 4dr. only place I found that would not:
a) piss me off
b) be in the way

is directly on the front/top of the rear wheel wells firing inward. Whats more fun is where I am putting the amps :laughing:

02-18-2009, 11:14 PM
can you post some pics when you are done... I was wondering where I could mount some in fiber glass boxes... mold them to go over the wheel well toward the back of the seat. not sure if 10's would fit... might only be 8" subs.

05-13-2009, 05:00 PM
i've done the sub under the drive seat (a 10" pioneer shallow mount) and the amp under the passenger seat and it work out well for me, there is stuff that needs to be moved and CUT off, but over all the install was great...

pics are as follows:
amp under passenger seat, looking from rear
Amp under passenger seat again from the front and you can see computer relocation
here is another one from the side of the computer relocation
this is the driver seat all the way forward showing the sub and box

for the box to go there, i had to cut off some tab (kinda a L bracket piece) and relocate the sensor bracket to the underside of the seat leg closest to the center console and cut it so the sensor would go back on it in its new orientation sorry don't have pics of it, the sub box works, buck come summer i am gonna redo it with fiberglass so i can regain some cubic footage, right now the box is at its minimum approx .35 cubic feet, so with fiberglass i figure i can form it out towards the door and whatnot to enlarge it to about .5 cubic feet, but for now it works sounds good from all seats but feel it the most from the drivers seat...

another note is that the passenger behind the driver lost some toe room and getting to the rear seat from front passenger side amp protrudes into the area where you step to get into the rear, but it is great cause with a two door JK i have lost NONE of my very limited cargo room, thought about a 12 inch in the rear behind the rear seat but i was not willing to give up any of the grocery getting room...

finally a shot of my new tweeters:
they are alpine and are matched to their 6.5 inch driver in the stock speaker pod and sound SO much better then the factory plastic speakers...
this is the component set that i have installed:

07-22-2009, 03:54 PM
Very cool. Great idea. I actually cut a hole in my floor on 2 YJs I once owned and mounted a box underneath the floor. I like your install better. The only thing I think I would do different, is make the box out of sheet aluminum and line it with fiberglass. This would yield a good deal more volume with the same size box, and make the application quite a bit lighter. Thanks for the great idea!

07-22-2009, 07:26 PM
No matter what if you put a shallow mount under any seat there will be cons. They can go under the back seat of a 2dr or 4dr jk but you will lose the function of folding down the seat. Under driver or passenger seat things will have to get cut out or moved and people will loose footspace. If having a sub is a must your best bet is putting one in the stock inclosure or if you want to go bigger just suck it up and throw it in the trunk, you wont loose THAT much space and if you need grocery space you can lay the seats down, scoot the box all the way over to the passenger seat and then youll have a ton of space(what i do with mine and i have a 15") or if you do a stealth box or a shallow mount in a thin box and put it against the side OR as some do but not as good for sound quality make a bracket and mount it against the tailgate all will work:beer:

07-22-2009, 07:27 PM
Somewhere, one time, I ran across a post or something that showed a replacement center console that held a 10" sub, similar to the Tuffy console. Now I can't find anything about it whatsoever, was I dreaming this?? If there is one available, I think that would be the way to go.

07-22-2009, 07:32 PM
idk if they do for jeep but my cousins tahoe has an 8" in the center console like under neith it not visible, but thats where our gear/shifter is locateed

07-23-2009, 10:36 PM
I am getting ready to put 2 10" in my 4dr. only place I found that would not:
a) piss me off
b) be in the way

is directly on the front/top of the rear wheel wells firing inward. Whats more fun is where I am putting the amps :laughing:

Do you have a pic where your going to put the subs?

07-24-2009, 07:34 PM
idk if they do for jeep but my cousins tahoe has an 8" in the center console like under neith it not visible, but thats where our gear/shifter is locateed

that sounds like thunderforms or something... ( i know another company... name escapes me )