Weird Radio Problem 2001

[KevinCG316]

I have a 2001 Malibu and when i have the radio on the radio works fine while driving, but when i slow down or come to a stop the radio gets lower and them when i speed up it gets louder. Is it defective or is this how the Malibu radios work. Or is this just a weird situation???
Thanks
Kevin

[bcopeland]

That's the speed compensated volume knob. It is the outside knob on the volume control. To turn it off, tunr it counter clockwise until it is at its lowest volume.