I used to be a bass junkie, 15s, 12s, 10s, single 10, now this single 12. I've tried to shake it, but many vehicles and years later I still need my bass fix, but I don't care to shake windows from 6 blocks away anymore. I want a full sounding clean system with nice, hard hitting bass and deep thump to compliment the many genres of music I listen to (Hard Rock/EDM/Rap/HipHop/Country). I'm also limited on space due to this being in a F250 extended cab. This was perfect for me and I'm extremely glad I got it. This sub handles all of the different types of bass from the aforementioned genres, no problem. The bass knob is great as well.....but I got a pack of LightDims and put a dot over the LED, way too bright.
I previously had the 10" JL and although that is a great unit, after completing my system (100% thru Crutchfield, thanks all!) it just needed more bass. Gave this JBL a try and wow what a difference. Night and day! No, you will not rattle windows 6 blocks away, but you will be heard and this thing hits hard and thumps low. It really filled in my sound nicely and now it has the ability to over shadow my door speakers instead of the other way around. At only 50% gain, it's now balanced and still very loud. I'll put the JL 10 in my wife's SUV, so no loss there.
Pros: Hard hitting, thumps low, great looking, included bass knob with LED, amp is nicely flush with the back of the box.
Cons: Bass knob is tiny, have to use finger tips. LED on bass knob is too bright, order a pack of LightDims, problem solved.