scope:

This document applies to any loudspeaker assembly that is:

Designed to produce acoustic energy for any communications or entertainment purpose. The acoustic energy is radiated into an air medium, indoors or outdoors.

For consumer, commercial, or professional use.

For use with internal or external sources of amplification. For internal amplification, see Section 14.

Tests described within this document are to be performed on products that have the same physical properties of materials and the same mechanical characteristics as the product to be marketed.

This document applies to a loudspeaker assembly designed to handle 15 watts continuous and over, however a manufacturer may use this document for testing a speaker(s) rated less than 15 watts.

The units of measure used in this document are primarily ISO metric and generally followed with parenthetical approximate equivalents in U.S. units. This document deviates from this format where the referenced source for the measurement is specified in U.S. units only.