tv800: If the "A.AUX" is chosen on the BS4, I can press "volumen+/-" on the Beo4 or manually press "on" at the active link-eye. But if the source is not activatet at the BS4 .... I can not access this source from a link room.
I just did a small test with my BS 4 and a Beo 4.
A.AUX started the BS 4 in the main room, and I then put it in standby (red dot).
A.AUX from the Beo 4 starts the BS 4 from a BV8 link room. Again I put it in standby.
A.AUX from the Beo 4 starts the BS4 from a BeoActive BeoWireless link room as well.
I was also able to perform this last test with a Beolink 1000 control: just press "SHIFT" + "RADIO" to activate the BS 4's A.AUX.
Hope that helps !
First B&O (1976) was a Beogram 1500 ... latest (2011) change has been to couple the BL11 with the BL6Ks *sounds superb*