the world > physical sensation > hearing and noise > audibility > sound magnification or reproduction > [adjective] > loudspeaker (3)
Speaking loudly (in quot. 1855, figurative); spec. (the usual sense), capable of producing sound that can be heard at a distance; fitted with or…
Of a loudspeaker: having two separate drive units for different frequency ranges.
Of a loudspeaker: having three separate drive units for different frequency ranges.