I don`t think this will work.
BV7-40 must be configured to 5.1 setup. To configure Powerlink sockets, it is necessary, that the BV7 will detect a Powerlink product connected to the socket (Beolab speaker or Beo amplifier like MCL2P).
The simple way would be, masterlink your BC 9500 and BV7-40, connect an MCL2P to BV7-40 PL output, connect your passive speakers to MCL2P, set your BC9500 to A.OPT 0, set your BV7-40 to V.OPT 2 - that`s it.
You will need a Beolink converter 1611, an 7pin Audio Aux Link cable, a Masterlink cable, an MCL2P amp - available cheap second life..
Now you have the `classic`0-2 AV setup. When listening to BC9500, the BL6000s will automatically activated (stereo), when watching TVV you can activate BL6000 + center (BL7.4) or all 5 speakers (SPEAKER mode 5).
And you can add a sub like BL2/11.
Welcome to Beoworld.
Stefan