I guess I mean testing and reporting the actual freq. response at +/- 3db .. as there are some that use +/- 6db, some at +/- 10dbThere is probably not an easily portable mobile DJ system in the whole world, at any price, that can do that 20Hz at -3db response!
But this sub is rated from 19Hz at +/- 3db and lighter than many subs ... Captivator 118PRO