Bookshelf speaker

LS3/5A (1975–2003) from Spendor (left) and Rogers (right, without grill),
designed for BBC by Spencer Hughes and Dudley Harwood using KEF units, and first manufactured in 1975.

A bookshelf loudspeaker (or bookshelf speaker) is a compact loudspeaker, generally sold for consumer-grade home audio applications as part of a shelf stereo pair or home theater package, that is compact in size and intended to be placed on a raised surface, e.g. a bookshelf.