Never heard of any ...
It is not official that A single funky pup could hit 183dbs ...It cant be true ,I mean com on only with 4000 wrms
You go Every car audio forum ,they all praise funky pup ....but there isn't any official record or statement about em.
It's to be remembered that anything above 150 DBs is not a joke .... And u need tremendous amount of power/loudness to
Increase A DB rise ..higher u go more power u need to increase 1 DB.
But If there is such thing present ,would love to own it 