[Guest (MBNZ)]

I have a C240 with the standard radio. The manual describes a feature called an audio tone level. I cannot get the feature on my radio. It has been suggested to me that this feature can only be found on the C320. Can someone enlighten me please.

 

[Guest (MBNZ)]

I know that the optional Bose system on the C230 includes something called Audio Pilot. Its supposed to compenstate for backgroud noise. Does anyone know how this works? Is this Bose active noise cancalation, or does it just increase the volume?