Used a good quality 4 gauge amp kit, PAC line-out converter, to stock non-JBL stereo, with all new Kicker 2-way 6.75" door speakers and 2-way 3.5" tweeter speakers (dash) powered by stock head unit

Great build quality

This was the missing piece that I needed to improve the sound quality of my system

I used a good quality 8 gauge wire for power and screwed this sub to the back wall of the cab right behind the drivers seat

awesome bass quality

Pretty good quality tone for the price.

Great bass production, nice quality, the box seems to be made of aluminum or some other metal

Its sound quality is over all decent (but a bit boomy sounding), its tiny, its loud, and its frequency response is strong down to about 50 hz where it starts to drop off in volume but still will reproduce frequencies down to about 30 hz