音圈

音圈	yīn quān	(electronics) voice coil
音	yīn	sound / noise / note (of musical scale) / tone / news / syllable / reading (phonetic value of a character)
圈	juān	to confine / to lock up / to pen in
圈	juàn	livestock enclosure; pen; fold; sty
圈	quān	circle; ring; loop / (fig.) social circle; niche group; community; fandom / classifier for loops, orbits, laps / to surround; to encircle / to circle (sth); to mark with a circle