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  2. Audio power - Wikipedia

    en.wikipedia.org/wiki/Audio_power

    In some cases, an audio device may be measured by the total system power of all its loudspeakers by adding all their peak power ratings. Many home theater in a box systems are rated this way. Often low-end home theater systems' power ratings are taken at a high level of harmonic distortion as well; as high as 10%, which would be noticeable. [21]

  3. Power rating - Wikipedia

    en.wikipedia.org/wiki/Power_rating

    For AC-operated devices (e.g. coaxial cable, loudspeakers), there may even be two power ratings, a maximum (peak) power rating and an average power rating. [5] [6] For such devices, the peak power rating usually specifies the low frequency or pulse energy, while the average power rating limits high-frequency operation. [5]

  4. Amplifier figures of merit - Wikipedia

    en.wikipedia.org/wiki/Amplifier_figures_of_merit

    Modern Class AB amplifiers commonly have peak efficiencies between 30 and 55% in audio systems and 50-70% in radio frequency systems with a theoretical maximum of 78.5%. Commercially available Class D switching amplifiers have reported efficiencies as high as 90%. Amplifiers of Class C-F are usually known to be very high-efficiency amplifiers.

  5. Peak power - Wikipedia

    en.wikipedia.org/wiki/Peak_power

    Unlike average power, which is the mean power output over a period, peak power represents the maximum power output at any given instant. This distinction is crucial in applications where signal peaks can significantly exceed the average power level. Peak power is a critical parameter in the field of radio frequency (RF) and telecommunications.

  6. Crest factor - Wikipedia

    en.wikipedia.org/wiki/Crest_factor

    The peak-to-average power ratio (PAPR) is the peak amplitude squared (giving the peak power) divided by the RMS value squared (giving the average power). [1] It is the square of the crest factor. When expressed in decibels , crest factor and PAPR are equivalent, due to the way decibels are calculated for power ratios vs amplitude ratios .

  7. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    The frequency range often specified for audio components is between 20 Hz to 20 kHz, which broadly reflects the human hearing range. Well-designed solid-state amplifiers and CD players may have a frequency response that varies by only 0.2 dB between 20 Hz to 20 kHz. [4]

  8. Slew rate - Wikipedia

    en.wikipedia.org/wiki/Slew_rate

    where f is the operating frequency, and is the peak amplitude of the waveform, i.e. half the peak-to-peak swing of a sinusoid. In mechanics the slew rate is the change in position over time of an object which orbits around the observer, measured in radians, degrees or turns per unit of time.

  9. Power bandwidth - Wikipedia

    en.wikipedia.org/wiki/Power_bandwidth

    It should not be confused with "half-power" bandwidth, only used in conjunction with filter frequency response curves, where it refers to -3dB points in the frequency response of a band-pass filter. Data sheets for operational amplifiers often use the term (full-)power bandwidth to indicate the highest frequency at which the achievable peak-to ...