Assertion: subwoofer's speaker | /r/HasProperty | main
Facets:
Source sentences:
text: In professional concert sound system design, subwoofers can be incorporated seamlessly with the main speakers into a stereo or mono full-range system by using an active crossover.
text: The low pass adjustment allows you to set the subwoofers low frequency so it will blend seamlessly with the main speakers (very important for good sound).