That’s the product of a large subwoofer, a tuned pipe housing a speaker working somewhere just above the lower limit of human hearing, in the tens of Hz. A resonant 17Hz speaker horn is a rather ...

That may well depend on the proper placement and set up of your subwoofer. For what could be ... bass for your dollar from a box purpose-built to belt it out. Subwoofers are less obtrusive than ...