Assertion: subwoofer | /r/HasProperty | specialized woofer
Facets:
Source sentences:
text: While a woofer is a specialized speaker, a subwoofer is a specialized woofer that covers an even narrower frequency range.
text: A subwoofer is a special kind of woofer, designed to reproduce the very lowest frequencies in the audible range.
text: A subwoofer is a specialized woofer that operates below the range of a regular woofer.