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Old 05-28-2009, 01:05 PM   #1
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Amplifier under front seat

Has anyone mounted an amp under the front seat? I'm about to install a system in my TJ, and the Kicker amp that I ordered is just the right size to fit inside the seat frame under the driver's seat. I've seen a couple threads on here about people doing that, but none of them say how or have pictures.

I'm thinking of either mounting to the floor using some spacers so that it is not actually touching the floor, or maybe figuring out of way to make some brackets and mount it directly to the seat frame. Also, I don't want it to be visible, so I would like to make some sort of cover for the back of the seat frame so that you can't see it if you are looking in the back of the Jeep. If anyone has mounted an amp there, could you please tell me how you did it, how you kept it from getting wet, and post pics.

My options on where to mount the amp are very limited. I have two large dogs that ride in the back, and no back seat, so that area is not an option. I also have a Tuffy center console with a sub, so the center console is not an option either. Seems like my only option is under the seat.

Thanks!

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Old 05-28-2009, 02:53 PM   #2
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I personally wouldn't due to water that get in the drivers side floor basin. Last year I came outside to find my mats under 2 inches of water. I would try and go for the front of the passenger side well, and put a sheet of wood on top of it (leaving ventilation room, of course) for people to rest their feet on.

My instincts say to get it off of the floor altogether though. Maybe a vertical mount along the rear quarter panel with some sort of a guard to keep the pups off of it.

Good luck, I'm curious to hear what you decide to go with.

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Old 05-28-2009, 02:58 PM   #3
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i had mine there.... then it got stolen

i was gonna move it because its bad spot for it anyways (at least for me)

i hose out the inside pretty often, and having it in such a low position would be a bad move.

i have my rear seat out, as well as a large dog. my current set up is small box that has a single 12" sub and the amp is bolted to the box, and the box is bolted to the floor near the passenger side rear wheel hump.
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Old 07-20-2009, 05:48 PM   #4
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Stryker:

Just curious, did you mount that amp under the seat? If so, what was required? I want to do that as well but figure that I'll be "McGuyvering" a mounting bracket to level it up.

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Old 07-21-2009, 01:21 AM   #5
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I did mount the amp under the driver's seat. I had planned to post all my pics, but have been really busy.

I used a Kicker 08ZX300.1 mono subwoofer amp. It is only driving the 8" sub that I have inside a Tuffy center console. A huge benefit of using this amp is its size - it fits inside the seat bracket, but can only be inserted and removed from the front of the seat bracket. It will not pass through the back of the seat bracket. This is a huge benefit because once it is in, it will take a while to remove. More on my additional theft-proofing measures later.

I also did not need to make any sort of bracket for this amp - just some simple plastic spacers did the job.

STEP ONE: First, I made sure the amp would fit under the front seat, allowing for adequate space between the top of the amp and the bottom of the seat. I then removed the front seat. There was really not enough space to drill the necessary holes in the floor plan with the seat in place.

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STEP 2: With the front seat removed, I placed the amp inside the seat brakcet, determined where I wanted it, and then drilled the mounting holes. It is hard to see in this picture, but there is a small hump running under the front part of the seat bracket. I drilled the front holes through the hump. I then put the amp in place to make sure it fit, but did not tighten anything down.

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As you can see from this view, I used several hollow plastic spacers to raise the amp off the floor. The amp is probably about 3/4" above the hump that runs under the front of the seat bracket, and at least 2" above the floor at the rear of the seat bracket. Since that hump is almost 1" higher than the main part of the floor, this should give adequate protection if (I mean when) water gets inside of my Jeep. I don't plan on driving through anything that is going to fill the inside, so this should be sufficient protection for top-off Colorado flash thunder storms.

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By this time, it was about 3am. Kodi (my half malamute, half husky, half crazy furry goof-ball) was getting tired of my late-night installation shennanigans.

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TO BE CONTINUED
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Old 07-21-2009, 01:43 AM   #6
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STEP 3: At this point, I removed the amp and reinstalled the driver's seat. The amp is a tight fit, especially side-to-side, so there wasn't enough room to bolt down the seat with the amp in place.

STEP 4: With the seat back in place, I now slide the amp under the seat from the front (as I mentioned before, the amp I used will not fit through the rear of the seat bracket.

STEP 5: I used long bolts and nuts to fasten down the amp. I used nuts with those plastic locking inserts. They tend to not rattle loose, plus they take a fair amount of time to loosen. Since I had no help (it was now about 3:30 am - none of my friends are that crazy, and Kodi doesn't have opposable thumbs) it took quite a bit of acrobatics to hold a screwdriver to the top of the bolt while wrenching the nuts from underneath the Jeep.

Here's a shot from the front with the amp installed-
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Even with the seat all the way back, the amp is still completely under the seat.

View from the rear with the seat all the way forward-
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You can see the plastic spacers, how high the amp is off the floor, and that there is sufficient ventilation room above the amp.

Another shot of the rear, seat full forward.

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At this point, the only way I see anyone getting that amp out of there (also known as stealing my sh*t) is to either unbolt it (or cut the bolts) and slide it out through the front of the seat bracket. As an added measure of protection, I inserted a huge bolt through the seat bracket and across the front of the amp.

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My original intention was to insert two of these bolts - one from each side - but it seriously took me a good 20-30 minutes just to tighten down this one. Reason - it is very difficult to get a wrench inside the seat bracket to hold the nut while tightening the screw from the outside. I'm sure if someone really wanted to steal my amp, they could, but it ain't coming out with just a screwdriver.

Finally, the flap of carpet that previously snapped to that little hump under the seat makes a nice cover to block the view of the front of the amp.

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Old 07-21-2009, 02:09 AM   #7
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Here are two more shots taken from the rear with driver's seat slid all the way back. I'm a tall dude, so my seat is always all the way back.

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As you can see, you can't really see the amp unless you have your head inside the back of my Jeep. After I took these pix, I wrapped the white spacers with black electrical tape so that they aren't as visible. When I have some more free time, I'll probably get a piece of metal, paint it black, and mount it to the back of the seat bracket to completely hide the amp and also protect the wires from feet - both human and dog. And yes, that is dog hair covering my carpet.

It was not a quick install, but the way I did it should prevent all but the most determined (and well-equipped) thieves from stealing it. I forgot to metion before, but another reason that it took so long to tighten that large bolt that I put through the front of the seat bracket is that there really isn't much room to get a screwdriver in there. I stripped the hell out of that screw head, so that is just going to make it even more difficult to remove (unless the thief has a grinding wheel to cut through that bolt).

There is also adequate ventilation and adequate protection from water. Obviously, if you are going to forge a river deep enough to have water up to your seats, then this probably won't work for you, but my amp is at least 2" above the lowest parts of the floor, so it works for me.

Hope this helps.
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Old 07-22-2009, 05:18 PM   #8
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Stryker:

That's a spectacular write up, really! I'm going to town on mine friday, but am still waffling between under the front seat or bolted to the bottom of the roll-away back seat, which remains in all of the time.

Either way, I think that your description of the procedure deserves the attention of anyone looking at mounting an amplifier in their TJ.

Great Job, hope you have many many hours of enjoyment out of it.


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Old 07-27-2009, 12:35 PM   #9
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never mind...looks like you found a solution to your problem.
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Old 01-28-2011, 11:11 PM   #10
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Excellent write-up but for some reason I can't see the pics. I'm dying to get my new amp mounted buy really want to be sure I choose the best mounting spot.

Anyone have thoughts on how I could view the above pics? (It just says Image not Available")

THANKS!
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Old 01-29-2011, 08:23 AM   #11
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THe pics are gone because the thread is a year and a half old, and for non-paying members, there is a data limit on how much you can post, so people delete their old stuff to post up new pictures.

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