Midrange Speaker Test (500 Hz Warble Tone)

The 500 Hz warble tone is used for the evaluation of midrange speaker response. The tone is qualified as a warble sound. At midrange frequencies use a warble tone rather than a sine tone. The location of a warble tone source, such as a speaker, is easier to identify. A normal sine tone can set up a standing wave within a vehicle. A standing wave may cause difficulties in determining the source location.