Assertion: speaker | /r/HasProperty | driven to high levels
Facets:
value: for an extended period of time
type: TEMPORAL
Source sentences:
text: These may also occur when the speaker driven to high levels for an extended period of time and the voice coils of the two drivers dissipate vibration and heat at different levels because of differing air circulation (one driver is exposed to the outside air, and one is fully enclosed in a chamber).