Midrange Speaker Test

Use the 500 Hz warble tone in order to evaluate the response of the midrange speakers. The 500 Hz tone qualifies as a warble tone because the audio characteristics of the 500 Hz tone are different than a sine tone. The 500 Hz tone produces a warble sound. Use a warble tone in order to evaluate midrange frequencies because the warble tone makes the tone source easy to identify. A sine wave may set up a standing wave in the vehicle. The source of a standing wave is difficult to identify.