Select Options > Installation, select the name of the stereo, then select Zones > Speed Vs Volume.

Enable

Enables the automatic volume control feature.

Speed Source

Sets the source that the stereo uses to determine the speed (Speed Source Information).

Max/Min Speed

Sets the expected maximum and minimum speed range for the selected Speed Source. The Minimum setting indicates the speed at which the volume plays at the level you set by turning the dial. The Maximumsetting indicates the speed at which the volume plays at the highest level set in the Volume Increase setting.

TIP: You should start by setting these values at the speeds you typically expect from your engine or sensor and adjust them as needed.

Volume Increase

Sets the total volume increase for each zone when the selected Speed Source reaches the set maximum speed set in the Max/Min Speed setting. The higher you set this level, the louder the volume will be as you approach the set maximum speed.

NOTE: When the volume increases to adjust for speed, the actual volume output changes but the volume-level indicator bar and number stays the same.