Assertion: subwoofer's speaker | /r/HasProperty | center
Facets:
Source sentences:
text: For those not familiar with the Home Theater concept, it requires a big-screen TV (or wall screen if you use a projector); at least five speakers (front left, front right, center, left rear and right rear) or seven if you want to do it right (the extra two are left surround and right surround.)
text: You'd draw lines on the baffle of the enclosure, crossing at the point where you want the speaker to be centered.