subwoofer

noun

1. A loudspeaker designed to produce low-frequency sound, especially subbass.

   “Hip-hop took the language and made it graffiti—it was music video on a wall with a beatbox blowing its subwoofers next to it.”

   “Even economy vehicles offer multispeaker audio upgrades, including a subwoofer.”

   “Subwoofers are typically placed not only near the floor, but also close to one of the walls.”