Stock Radio question

I know this is a meanial question, but unfortunately I don't have a owners book for my glove compartment.

On the radio power/volume knob, theres a ring with about 4 settings off to the left side of it. You can switch them to a selection, independent of the volume knob itself. I've messed with it and hear/notice no difference. Anyone know what these selections are for?

Also, anyone notice random volume changes when listening to the radio?

I believe that is the speed volume control.

The volume will increase when you get up to higher speeds to compensate for road noise.

Best to leave it to the lowest setting and control the volume yourself.

I believe that is the speed volume control.

The volume will increase when you get up to higher speeds to compensate for road noise.

Best to leave it to the lowest setting and control the volume yourself.


Lowest being the setting closest to the floor?

Yea, I think so.