Speaker sensitivity is a measurement of the amount of sound output derived from a speaker with one watt of power input from an amplifier. Sensitivity is usually measured with a microphone connected to a sound level meter placed one meter in front of the speaker. Speaker sensitivity is used to determine the amount of power necessary to drive or operate a speaker. For more information, refer to this article
Also Known As: speaker efficiency
Speaker efficiency is used to determine the amount of power required to drive a speaker.