Just to be sure: Ypour 9500 is connected to the Avant via a 1611 and the speakers are connected to the Avant? When you watch TV sound is coming from btoh the speakers and the TV? But when you listen to Cd or radio sound is only coming from the 4000?
If that is the way it works then everything is working just perfect. This is how it should be. But you can control it with your Boe4. Press "List" til you see "Speaker" in the display. Then press "3" and sound will come from both the connected 4000 speakers and the TV. Press "2" and only the speakers will be on.
/Lars