Can anyone help, I was bequeathed a Beomaster 3500, not a bad piece of kit although in Beoworld not a favorite. I have replaced my Beomaster1900-2 as she needs to go in a box for a rest! Can anyone tell me how to tune this unit and if there is a way to switch off the 2nd set of speaker outputs like you can on the the 1900-2? Any advice always welcome