Assertion: speaker's amplifier | /r/CapableOf | produce same acoustical power
Facets:
Source sentences:
text: An '84 dB' source would require a 400-watt amplifier to produce the same acoustical power (perceived loudness) as a '90 dB' source being driven by a 100-watt amplifier, or a '100 dB' source being driven by a 10 watt amplifier.