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Old 05-11-2017, 09:22 PM   #1
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Default Floating Subwoofer

So I wanted to install a sub in my hatchback but did not want to use the trunk space. I use it a lot and didn't want that area taken up by a sub, so I decided to mount one under the driver seat. This is personal preference and not everyone will like it, but it works well for me.

Tools needed for the job:
  • Philips screwdriver/Flat blade screwdriver
  • Utility Knife (steak knife)
  • Soldering Iron
  • Wire cutters
  • Wire Strippers
  • Needle nose pliers
  • Flashlight
  • Panel tool/Retaining clip remover
  • Electrical tape
  • Socket wrench and sockets
  • Electric drill and bits
  • Heat gun (hairdryer)
  • Heat shrink tubing
  • Lug crimper tool
  • Screws

All the parts I purchased for the job:
  • Marine grade heavy-duty lugs - 1/2 in. and 1/4 in. rings
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
  • Speaker cable to RCA adapter with line out converter
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
  • Complete 8 gauge amp install kit
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
  • 50 amp in-line circuit breaker
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
  • 8" 600 watt low profile active powered car subwoofer
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
  • Side mount drawer slide hardware
Liberty 16 in. Full Extension Ball Bearing Side Mount Drawer Slide (1-Pair)-D80616C-ZP-W - The Home Depot
  • Foam tape
https://www.amazon.com/M-D-Building-...ords=foam+tape
  • A piece of wood (for mounting)


Here is a picture of the end result for now

Step one:
Remove everything in the way. We will start with the driver seat and then move to the panels. You will need a T-50 star bit for the seat bolts. There are only two bolts holding the seat down and are located in the rear of the seat bracket. Shown here:

You will have to remove this plastic cover to get to the screw.

Next take off the panel. It is one whole piece and has about 4 clips holding it in. Now comes the hard part of making a hole for the power cable to come through the firewall. The material around the original cables is rubber. Use an electric drill with an extension to get to the correct spot. After through the rubber, cut the excess away with a knife.
Engine Bay
Car interior

Step two:
Now that everything is out of the way we can start getting it all prepped. First we are going to mount the circuit breaker just inside the engine bay on the plastic molding.


Next find out where you want to get power from the battery and check how big the bolt is. After sliding some heat shrink tubing on, then crimp the correct size heavy-duty lug to one end of the power cable.
DO NOT CONNECT IT TO THE BATTERY YET. Hopefully you know that...
We are going to cut about 10 inches down from the side the lug is already on. This is where you will connect the circuit breaker.


I am still writing up the whole process with pictures. coming soon.
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Last edited by SonicHedghog; 05-17-2017 at 10:59 PM. Reason: Updated
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Old 05-11-2017, 11:45 PM   #2
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I did my 10" in the spare tire with amp. I thought about under the seat but I still get passengers in the back seat

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Old 05-12-2017, 06:04 AM   #3
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Nice work. I thought about resonators under the driver and passenger for midbass but a subwoofer is even better!

I found space above the spare using a JL shallow 12. Recently flipped it to fire up, more vibrations down firing. Poor man's dynamat works well too

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Old 05-13-2017, 02:19 AM   #4
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Any pics before you put it under the seat?
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Old 05-17-2017, 11:14 PM   #5
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Default More Pictures

Here are a few more photos until I get to them in the walk through.
Attached Thumbnails
Floating Subwoofer-18527877_10154318521175947_2885817684820982125_n.jpg   Floating Subwoofer-18519431_10154318520470947_7995604459636325449_n.jpg   Floating Subwoofer-18486163_10154318520950947_4323926345125244563_n.jpg   Floating Subwoofer-18557261_10154318520725947_2115360260482199251_n.jpg   Floating Subwoofer-18486170_10154318519860947_7069119077395052357_n.jpg  

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Old 05-18-2017, 05:08 AM   #6
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Cabinet sliders, that is BRILLIANT!

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