Well last weekend I decided it was time to upgrade my factory JBL sub. My goal was to retain the factory look while boosting the performance.
I did a lot of searching around, but I hadn't come upon anyone that utilized the factory enclosure. So I decided I would try it. I pulled the factory box out and removed the stock sub. Interesting note - it is a dual voice coil sub. I then measured the depth of the box. After doing some research I purchased a 8" JL Audio sub.
While I had the seats and cubbies removed, I decided to Dynamat the back wall.
Then I applied Dynamat to the stock enclosure, sealed the old speaker screw holes and trimmed a little of the inside of the box (to allow the JL sub to fit).
Next, I mounted the JL sub into the box and reinstalled it into the truck. After driving around for a week I was disappointed with the sound output. The factory JBL amp just didn't have enough power to run the new sub. A little discouraged, I remembered I had a Soundstream "Little Wonder" amp in storage.
I hooked up the Little Wonder and WOW it made a HUGE difference! I was never looking for huge bass, just enough to fill out the highs and mids. This sub definitely delivers!