The 'little problem' is that the Transmitter is designed for only one input - either a B&O (PL) or the RCA/Toslink. For changing this you have to flip the little switch beside the input.
Would work - but is not 'workable' in an everyday solution.
I would certainly not recommend it.
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I was just wondering, since the dealer seemed to have a solution?
The BV11 however has an analog input - that is the small multi-port.
This can be used for an analog source. If you connect the PL-out of the Essence (one of them) with a 'special cable' (available at the B&O shop), you will get sound from the Essence to the BV11.
As you can configure that input-port as you like, you could name it 'Radio' and assign the 'Radio' button (or rather the code that it sends) to it.
You (or the dealer) would then have to reconfigure the Essence-knob to send an ir-code (the Radio-code). And the Essence must be configured for a 'fixed line out' (in the app).
Pushing the knob/the Radio button on Beo4 would this way let you stream from the BeoMusic app to the Essence and open the right port on the BV (the analog). The volumen is controlled via Beo4/BV11.
Not a 100 percent solution - but bear in mind that the Essence mainly is a standalone system!
I don't know, if it is this kind of solution, that the dealer has in mind - but I can't come up with any other for 'adding an Essence to your existing setup'.
So I am very keen to hear what the dealer had in mind!
Note: If you have a NL/ML Converter somewhere in your setup, there is another way of doing this!
Personally I would choose a Playmaker (you can still get them) for streaming/AirPlaying to the BV11, since you loose most of the magic of the Essence, when you would make the above solution.
MM