Assertion: subwoofer's speaker | /r/HasProperty | attached with speaker wire
Facets:
value: physically
type: MANNER
value: in some cases
type: TEMPORAL
value: to an external amplifier
type: TRANSITIVE-OBJECT
Source sentences:
text: The amplifier may be built right into the speaker housing or, in some cases, the speakers are physically attached with speaker wire to an external amplifier that is powered by batteries or plugged into an AC power source.