Hi Baaz,
I had some problems with the passive and the Core. It worked ok but it wasn’t powering on and off when shutting down the Core.
I had outdoor passive speakers attached to a Beolink Passive. Attached to this via Powerlink (Passive) was an Essence 2 (RJ45) with the correct cable (6271225). It all powered up and worked as it should and the Passive turned off when the Essence turns off. All good.
When I replaced the Essence with a Core the Passive would turn on and do its thing however it would not power down when I put the Core into standby. The Passive remained on. I have tested it on 2 Cores and they both did the same thing.
I contacted B&O support and they have replied with the following
'After reviewing the case, we suspect the cause for this behaviour is that the Beosound Essence cuts the 5V on PIN1 when entering standby when the BeoSound Core does not. To fix this, the "old" powerlink plug will need some modification. If you were to cut PIN1 and move the lead on PIN4 to PIN1 instead, this should rectify the issue and restore the system to its previous functionality.
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In short you’ll need a specially modified cable if you want full functionality including on/off.
Peter