I recently purchased a set of Penta MKIII speakers, boelab 8000 speakers, Beosound 9000, Beolab 4000 speakers and Velodyne subwoofer.   The setup included RCA cables (no power link cables).   The Aux connection on the Beosound 9000 has a splitter into 4 RCA connections.  Each RCA connection is color coded (2 black, 1 red, 1 white) - not sure if there is any significance to the colors.   When I've connected the one black and one white RCA cables to each of the Penta speakers they produce sound (loud) even though the Beosound's volume is set to 0.  

- I'm assuming the volume issue is related to how I've connected the speakers.  Is there any way to adjust sound via the Beosound 9000 with the RCA cables or do I need to get power link cables? 

- Will the display on the Penta speakers work without power link cables?  Right now, there is no display when connected via the RCA cables

- Can the remaining 2 RCA cables be connected to the subwoofer?  

only one of the Beolab 9000 speakers has a power cable and neither of the Beolab 4000 speakers have a power cable.  I'll need to find those along with audio cables.  I'm planning on eventually getting a non-B&O receiver for surround sound with power link to RCA connections.