Chapter 85 — Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

Heading 8518 — Microphones and stands therefor; loudspeakers, whether or not mounted in their enclosures; headphones and earphones, whether or not combined with a microphone, and sets consisting of a microphone and one or more loudspeakers; audiofrequency electric amplifiers; electric sound amplifier sets.

National subdivision 8518.2 — Loudspeakers, whether or not mounted in their enclosures:

Subheading 8518.22 — Multiple loudspeakers, mounted in the same enclosure