Assertion: speaker's woofer | /r/HasProperty | class
Facets:
Source sentences:
text: Class of loudspeaker:  Class 1: maximum SPL 110-119 dB, the type of loudspeaker used for reproducing a person speaking in a small space or for background music; mainly used as fill speakers for Class 2 or Class 3 speakers; typically small 4" or 5" woofers and dome tweeters Class 2: