Assertion: speaker | /r/HasProperty | inefficient
Facets:
value: fairly
type: DEGREE
Source sentences:
text: Speakers are also fairly inefficient: much of the electrical energy you feed into the back of a speaker doesn't emerge from the front as sound energy but is wasted in the coil as useless heat energy.
text: Most loudspeakers are inefficient transducers; only about 1% of the electrical energy sent by an amplifier to a typical home loudspeaker is converted to acoustic energy.