Loudspeaker enclosure
A loudspeaker enclosure or loudspeaker cabinet is an enclosure ( often box-shaped ) in which speaker drivers ( e . g . , loudspeakers and tweeters ) and associated electronic hardware , such as crossover circuits and , in some cases , power amplifiers , are mounted . 
<triplet> speaker driver <subj> loudspeaker <obj> subclass of <triplet> tweeter <subj> loudspeaker <obj> subclass of