Assertion: filter | /r/HasProperty | a low-pass filter
Facets:
value: for the woofer
type: TRANSITIVE-OBJECT
Source sentences:
text: When such a filter is built into a loudspeaker cabinet it is normally a passive filter that also includes a low-pass filter for the woofer and so often employs both a capacitor and inductor (although very simple high-pass filters for tweeters can consist of a series capacitor and nothing else).