I was very unhappy with my infinity audio system in my JKUR as are most people. I had previously changed out the the stock speakers with Polk DBs and kept my stock 730n nav unit. I also did the JL Audio 8w3 in the stock sub enclosure and was happy with the sound. I dynamatted the inside and backside of the enclosure in addition to sone of the surrounding body panels. Sound was good but I gotta be honest, its been deteriorating. Its not the JL sub, its that horrible plastic enclosure. Its just not made to handle a high power sub with 250 watts going to it. It rattles more and more and squeeks on low bass notes. The glued seems are probably letting go inside the enclosure. Ive given up on it. In addition, I need more bass. I got too accustomed to the 8w3. Ive resorted to looking into an external sub enclosure. Ive always been a JL fan so Ive found their HO wedge which comes with either a 10w3 or a 12w3. I didnt want to put an external sub in due to the theft factor but I think I can minimize the theft by making a cargo cover which will cover the cargo area so any prying eyes will not be able to see whats inside. Anybody out there with some feedback or pics of these JL subs?? Thanks Dave

 

Depending on your budget, why not take a look at this?

Jeep Wrangler Unlimited '07-'12 - JL Audio

 

Ive researched the stealthbox. Its pretty exspensive at $900. In addition you have to buy the subwoofer delete panel from mopar and you lose the 12v plug which I do like. JL's HO wedge boxes get phenomenal reviews and you can find the 12 inch box for $350 or so and the 10 inch version for a little less. Anything has to be better then that plastic box in the back rattling and resonating. Love to hear feedback on them before I buy one.

 

Just make sure you take into consideration with how you wheel and what equipment you haul since you will lose a bit of space since you will have the factory sub panel as well as the new box. You will have to remove the sub or bolt it down in order to wheel. The main reason I suggested the stealthbox is because you are paying for a vehicle specifice custom box that is designed to be mounted and secured to the vehicle. You are paying for a $600 w5 series sub and a $300 custom box. Well worth it in my opinion. It all depends on what you want out of the sub and your budget. I guarantee you won't be disappointed with the 12w3 HO Wedge. I ran 2 12w3's in the past and loved them, but haven't used the HO Wedge series box.

 

You could also brush the inside of the factory enclosure with several thick coats of fiberglass resin. It's a little messy to work with, but will definitely make the enclosure more solid.

 

I could do that but I need a little more bump now lol!

 

Well Ive installed the JL 12w3 HO ported wedge and all I can say is wow. Its been years since Ive put music on that brings a smile to your face because it sounds so good. My original rockford fosgate amp that I used with the 8inch JL was not 2ohm stable when bridged so I replaced it with a Pioneer 500w class D amp. Shout out to BestBuy.....they matched amazons price which was $80 cheaper then BestBuy. They price match select online retailers now so keep that in mind before you buy. The amp mounted right up in the plastic tub in the back and since its a class D it barely gets warm. My old rockford would leave burn marks on your hand it got so hot. To sum it up, the 12inch Jl is not even close to being in the same class as the 8 inch. Not that the 8 didnt sound good because it did. Its just that the 12 delivers so much more to the low frequency spectrum. Ill take pics later and post.....the enclosure doesnt take up too much room and its easy to remove should I need extra room.

Dave