It helps to remember that the very lowest frequency of interest to a portable sound vender be it Clair Bros doing arena rock tours or your local bar band is the 40 hz low E on a bass guitar. Trucking the capacity for anything lower is an unnecessary expanse that will quickly put you out of business.

Quote Originally Posted by RMC View Post
MoD,

... There's a number of PA and SR cabs having an F3 bass "cutoff" in the 50-80 hz range. JBL has/had a number, Peavey also, as well as others. ...

Richard