The output, as measured in watts, of anything that generates sound. An electronic device that increases the amplitude of a signal. The strength of sound waves or an electrical signal, as measured against a mean. 2. That which determines loudness. An attenuator uses resistance to reduce output voltage, as with a volume control.
Balanced lines reduce interference from external sources like radio frequencies and light dimmers.
The lower end of the frequency range, from about 20 Hz to about 300 Hz. The use of separate amplifiers to power woofers and tweeters. Also control board. Mixer, Mixing Console . A mic that depends on an external power supply or battery to electrostatically charge its condenser plates.