Hey fellow Jeepers!
This weekend, I was looking for a project to do so I decided I would perform a simple mod on my 2014 Jeep Wrangler. I've seen a couple of threads talking about a cheap and simple way to improve the sound system, especially with the sound bar so I decided I'd give it a go.
As some of you may know, the sound bar is hollow (at least in my Unlimited JK) therefore with the two speakers in the sound bar, the sound not only travels out of the speakers, but also gets lost within the bar creating an "echoey" sound. One way to prevent this is to add stuffing behind the speakers forcing the sound to travel out into the interior of the Jeep rather than staying between the walls of the plastic.
I came across a great video posted on YouTube (posted below) where another Jeeper did the same thing. I figured I would not only share his video, but also give some additional details and share how I did it.
Just to give you an idea of what type of Jeep I am working with, I have a 2014 Jeep Wrangler Unlimited with the Premium Sound package.
The only materials that you will need is your T-15 Torx driver and Polyester FiberFill. I picked up a bag of the FiberFill at Jo-Ann Fabrics for $6. As you will see in the pictures I've attached, the bag I got was wayyy more than I needed.
Steps for Mod:
1. The first thing I did was sit in the backseat of my Jeep and turned on the music. I was curious as to how much improvement I would hear. I would upload before and after sound clips but it wouldn't do it any justice.
2. After I had myself a baseline, I simply removed one of the speakers with my Torx bit. The cover and speaker came out with no problem and the speaker even has a little quick disconnect which made it easy to fully remove it and get it out of the way while I added the stuffing.
3. Now that the speaker channel was empty, I just grabbed a good handful of the Poly-Fil and began stuffing it all around the area that the speaker sits. I concentrated on the area that leads to the center of the sound bar so I could prevent any sound from moving that way. I didn't over-stuff any of the areas but I did put enough all around the channel until it was ready to spill out. You will have a good feel of how much more can fit in there. Don't forget to add a little in the center too so it sits right behind the speaker.
4. Next, just align the cover to the front of the speaker, bring it back towards the speaker channel, and reconnect the speaker cable. Once you put it back in the channel, you will be able to feel the nice comfy fit from the Poly-Fil. Hand start the 3 screws and tighten back into place.
5. The other speaker is the same exact steps. If you get the same bag that I got (which is the same from the YouTube video), you will have more than enough left over.
6. Since I have the Premium Sound package, I also have a sub woofer included in the trunk of my Jeep. I figured that since I have soo much Poly-Fil left over, why not add some there? If you also have the sub woofer, the torx bit is the same size as the sound bar speakers however this time, there are 6 screws. After removing the screws, you will see another channel that the sub sits in. The sub has 2 quick disconnects but there was enough play with the cables that I didn't need to unplug them.
7. Again, I just grabbed a big handful of the Poly-Fil and stuffed the entire channel. I put enough in there to give the speaker a comfy fit but not too much to put too much pressure.
8. Lastly, hand start all the screws and just tighten the speaker/cover back into place.
Now that I had put the Poly-Fil around all the speakers, I took a seat in the backseat again and turned on the music. Honestly, at first, I was expecting to hear a much bigger difference. I wasn't overwhelmed but I did notice an improvement. You can notice that the "echoey" sound isn't there and the sound feels more pronounced. The biggest difference that I did notice is the improvement in the Bass. I'm not sure if it was a combination of adding the Poly-Fil to the sound bar and the sub woofer but the Bass was hitting much harder.
I would definitely recommend this to anyone that is looking to improve the sound in their Jeep. It was a nice simple mod that cost me $6 and took me no longer that 15-20 minutes. I've included a few pictures below for your reference.
P.S. The fibers from the Poly-Fil can be a little messy...avoid a fleece if doing this! Mine sweatshirt was like a magnet.
I hope this helps and message me with any questions!