Subwoofer Install 2018 Crewmax

I truly appreciate all the ideas I received from the already existing forums regarding this topic, but none the less I tackled the issue of no subwoofer, and not a lot of real estate to install one.

I mocked up a two part box each measuring 5.5 inches at the base 2 inches at the top and 15 inches in height. With two holes cut using the template provided. I used one solid back and a top and bottom that spanned the two boxes for sturdiness.

I used two shallow mount 10 inch R2 Rockford Fosgate subwoofers and a 500 watt Rockford Prime amp with a built in sound sensing device. These required .7 cubic feet each for optimal range which was achieved by making the box taller.

As many suggested mocked it up and test fit before continuing. Once I was good to go I glued, screwed and clamped my 3/4 inch MDF together.

About two hours into drying I was dying to see how the mdf would soak up the primer and was fairly pleased.

I let it dry for 24 hours and then silicones the inside of the box.

I cut out holes for routing wires and installing terminal posts from Amazon. I wanted four terminals so I could run each voice coil to a terminal as positive and negative so if I messed up my 2 ohm wiring I could just alter it without taking the sub in and out.

Primed and then bedlined the beast with rattle can Rustoleum bed liner. Thin coats and was quite pleased with the finish, as I never used it before I learned quite quickly it can be messy. Shrug*

Siliconed the terminals in and 24 hours later I stuffed the boxes with poly fill and got to wiring.

Mounted the subs and then amp while having a brew, mounted the amp crooked as all hell but no one will see it but the forums haha.

For install I used 8gage Rockford wiring kit and the line out converter function from the amp. I ran my power wire from the battery through a loom in the firewall and down the kick panels on the driver side.

I tapped into the door pillars for speaker output/input and tapped into a 12 volt outlet for the remote on wire.

When I tapped into the cig lighter I ran my control knob using 3m to secure it, wasn’t bold enough to drill it yet.

After all the running of wires, I removed my seats once again and used the middle seat belt buckle mount as my ground and cut a groove in the styrofoam under the carpet.
One of the seat bolts on the 60 side of the split the middlemost bolt closest to the back wall of the cab is a different diameter 17mm bolt so I put some white touch up paint on the head and it’s receiving nut on the floor.

Reassembly and prayers and I must say it provided very tight and responsive bass. I was concerned after fitting it in that the subs would touch the back of the seats so I powdered them with Chalk and turned them up, no powder on the seats was a green light for me!

New to the forums sorry if I posted in the wrong section or if my excitement made me ramble on,
Cheers gang!

 

Well first off welcome to the forums from San Diego. Hell of a first post! Thanks for the write up and pictures, looks great. Keep it up and you’ll fit in just fine around here..

 

Also, if I didn’t have two kids under 2 in the back seat I’d love to do something like this. Future goals...

 

Thanks man! Looking forward to it, first post from the little island of Cape Breton in Canada. Cheers!

 

Welcome and nice job! How does it sound?

 

It sounds great, it has a very tight bass typical of a sealed box, no sound distortion even at the full volume, quite pleased! Was worried I’d have to replace the stock system but so far it compliments it nicely.

 

Wow great job! Like how you made room for the amp too! It's already limited space

 

Your ground needs to be on sanded, bare metal. How you have it will lead horrible unneeded strain on your electrical.

 

If I ground the bracket down to bare metal would that suffice or should I ground it elsewhere?

 

So after some rooting around I found that the mount on for the seat bracket has a bolt to the floor as well all bare metal and about an inch or two from where I had the ground initially, I welded a nut on and used a bolt and some star washers, ohmmeter says it’s good so I am happy. Have a picture of the area with just the wire at the moment I’ll add one of the welded nut but you get the idea of where I added it.