Subwoof

Pelayo leaned forward and picked up the menu in front of him. The subwoof bass from the speakers kicked at his eardrums, heavy as steel-toed boots.

It's essentially roots reggae, but with the bass and the subwoof extrapolated and intensified at a particular hertz that is supposed to be a healing frequency. And it's played on these really massive sound systems.

"El, this is fucking rad," Oksana subwoofed.