Any instrument for converting variations in an applied electric current or voltage (of appropriate magnitude and frequency) into corresponding…

= loudspeaker, n.

(see quots.).

Something which monitors or displays performance, output, etc., esp. of a system. A loudspeaker used in a recording studio, broadcasting studio…

A small loudspeaker designed to reproduce accurately high-frequency sounds whilst being relatively unresponsive to those of lower frequency. Cf. squ…

A loudspeaker designed to reproduce accurately low-frequency sounds whilst being relatively unresponsive to those of higher frequency. Cf. squawker…

A loudspeaker or public-address system.

A kind of loudspeaker that uses the vibrations of a volume of ionized air in place of those of a diaphragm.

= sense 7a.

A loudspeaker designed to reproduce mid-range signals with fidelity while being relatively unresponsive to those of low or high frequency (bass…

A loudspeaker designed to reproduce accurately sounds in the middle of the audible range.

A loudspeaker designed to reproduce very low bass frequencies. Also attributive, as subwoofer speaker, etc.