While conducting routine maintenance, an AV technician notices that there is distortion coming from the...

Distortion from the loudspeaker is often caused by the input signal clipping, which occurs when the input level exceeds the amplifier's capacity, resulting in a distorted output. Clipping is typically due to overdriven signals, which can lead to speaker damage if unaddressed.

CTS Technology Specialist Reference

The CTS materials explain clipping and distortion as common audio issues resulting from improper gain structure, which should be avoided to maintain sound quality.