Definition of Audio power
Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts. The electrical power delivered to the loudspeaker, together with the speaker's efficiency, determines the sound power generated (with the rest of the electrical power being converted to heat).
Amplifiers are limited in the electrical power they can output, while loudspeakers are limited in the electrical power they can convert to sound power without being damaged or distorting the audio signal. These limits, or power ratings, are important to consumers in finding compatible products and comparing competitors.
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Questions people ask
Real questions from the Stack Exchange community – follow a link to read the discussion.
- Why do power lines buzz? · Physics SE
- Can an audio circuit be powered by a switched-mode power supply? · Electronics SE
- Can a power MOSFET for switching application be used as a linear amplifier? · Electronics SE
- What are power chords? · Music SE
- Is it bad to plug in a mic when phantom power is on? · Sound Design SE
- Power supply noise in audio · Electronics SE
Frequently asked questions
What is Audio power?
Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts. The electrical power delivered to the loudspeaker, together with the speaker's efficiency, determines the sound power generated (with the rest of the…