Assertion: speaker's size | /r/CapableOf | limit the number and size of drivers
Facets:
Source sentences:
text: For some people, the decision comes down to cost, since speakers of the bookshelf variety can be less expensive than floorstanding speakers, though they under-perform in terms of bass response, and their size limits the number and size of drivers they can contain, resulting in limited loudness and fullness of sound.