Conclusion: I have this JBL in a 2.00 cubic foot ported enclosure tuned to 30Hz with a cut off frequency of about 26Hz. This thing pounds hard without distortion and hits very deep. It is being powered by a JBL GTO-1001EZ amp.
Conclusion: I have this sub in a ported enclosure tuned to 30Hz and it sounds amazing. This thing gets deep and sounds very accurate even in this type of enclosure. Right now it is being powered by a JBL GTO 751EZ amp so it is probably getting about 625 RMS at 3 Ohms.
Conclusion: You must first know that you get what you pay for regardless of price. When you chose the top of the line product from JBL, you can expect it to deliver...in this case...beyond what you expect! JBL has been around from the beginning. There is a reason for their success and longevity.
Summary: This thing is awesome!! I have it hooked up to a hifonics brx2000.1d amp and I have a 2.25 cubic ft enclosure (needs a 2.75) but dang!! This sub is wired to 3 ohms and is pushing about 1000watts rms. this thing is definitely underrated!
Summary: By far the best car subwoofer I have ever heard. This thing produces clean and deep bass that hits you without no annoying distortion. I will own this babe for a nice 10+ years. When your looking to buy a subwoofer, you have to ask yourself how good is the bass.
Summary: This sub lives up to every 5 star review. It is a total beast and produces some incredibly detailed bass. I have 2 now - one in a sealed 1 cubic foot box as suggested by JBL for optimal sound accuracy and another in a tank of a ported bassworx box. Both are made of 1" mdf.
Conclusion: wow, what can you say. for starters this sub is rated at 700Watts RMS, but it is quite capable of handling much more! i did contact jbl's tech support and engineering department when i hooked this sub up to my planet audio BB2400.1, i told them that i was sending ~1200 watts to this sub.
Summary: I bought 2 JBL W12GTi MkII, 4 years ago, and still bring a powerfull and deep bass, like never before i heard. this subs, need a big responsable amplifier, i had a Power Acoustik 5500 (peak) 1700 rms 4 ohm. but remember this subs had 6 ohm, so for avoid damage it amplifier have 755% gain level.