One other thing to remember, all your OE speakers are 2 ohm.
So don't forget that when picking out an amp.

That being said, I wish there was a nice easy interface to "tweak" the settings and xover points in the infinity amp. I think it would make a WORLD of difference.
As it is with mine and a Kicker 8" sub, I have more bass than needed, and have to usually leave it down around -2 to -5 depending on music.

And if I turn it above 23-25 I feel like I'm going to go deaf. (Few other differences with my install, but same basic thing)

 

Update to this...

I bought a large pack of dynamat online and ended up lining all enclosures. The entire system sounds a lot better. I would say a solid 50% improvement from stock. Not bad for $40.

 

I did my sound bar speakers and went to do the sub took cover off and could not tell how to get behind the sub speaker to fill that enclosure and did not want to tear something up. How do you get behind it or remove the sub pls thx

 

There is a square notch at the bottom of the sub (frill removed ), use a small screwdriver to pop it loose. It has a sealant around it, but it will pop loose.

 

Thanks I am great at tearing *%&* up

 

Just something to note,
Believe it or not the factory subwoofer is probably tuned correctly according to the proper way you tune your system. Being correctly tuned however, doesn't mean its going to sound ideal/optimal to every listener. The perception of less bass is most likely just a listener's preference. I agree that the level of bass going to the sub is below where most listeners would prefer. People usually prefer an increase in bass over what's considered a properly eq'd system. In professional systems, high end or studio systems you don't actually hear a ton of bass level pounding out of the subwoofer, the subwoofer instead, blends in to the rest of the system as it should to produce an accurate and enveloping sound field..

 

I put polyfill in mine, made the sub sound alot better.

 

I'm going to assume you have a aftermarket headunit I hope. That is a huge step in the sound being better in your car. First off go to the settings and frequency control, chance it to fit a small car, then go to the frequency and yours is probably set on around 40-60 hz. Change it to 80-100hz. Because a jeep is a jeep and not a suburban, it's hard to pickup 40hz low. I can barley do it and I've out over $6,000 in my jeep for sound. Also, you need to only get cd's or use music from the iTunes to get the best sound quality. In the mobile interrainmemt industry we call line wire, "dirty music". Thats where the frequencies aren't 100% in the music. *IMPORTANT: THIS CAN LEAD TO BLOWING SOEAKERS AND SUBS"