i am close to getting nuts.
I have 3 Beosound 9000 here and also a couple of Beo4.
All Beosound 9000 work perfectly with every Beo4 when mounted vertically on the stand.
When i lay it down horizontally on the table stand (and of course change the arrows on the back) ALL three Beosound 9000 do not react properly to the Beo4 commands. They do, but you need to press several times the same button, get closer to the BS, change angles - all that stuff.
And i hear the Beo4 commands in the loudspeakers (Beolab 6000). A small buzz with every click.
I have absolutely no clue, why the position of the BS should have an impact on the remote control behaviour.
Happy for any help
69er