What is the loudest car audio sub woofers in the world?

[Brad Lee]

NOT the mtx jackhammer or anything stupid like that just regular sub woofers.

 

[MLS]

Not too sure but this may come in handy soon.

 

[James]

i would go with jl audio 13.5"w7 or the kicker 18"soloX. If your just talking about single subwoofers

 

[Chuck Josa]

Loudest "regular every day" sub.........I'd have to say either a Kicker Solobaric L7 or a JL W7