Multichannel channel swap

Support
1

I’m having a small problem playing multichannel files. My multichannel endpoint is a Trinnov Altitude 32. When I set the Roon settings for the Altitude to do 7.1 multichannel and play a 5.1 file, I get the result that I would expect: I have signal in LCR and R&L Rear and no signal in L&R Surround. So I don’t need to use the feature that allows you to swap the rear and surround channels. The problem is that in this mode, the Auro-3D upmixer in the Altitude won’t engage. If, on the other hand, I set Roon to send 5.1 to the Altitude, the channels are swapped and now I get signal on LCR and R&L Surround and the Rear channels are silent, and, in this mode, the Auro-3D upmixer in the Altitude will engage and all 7.1.4 channels are in use. But with the upmixer turned off, the channels are swapped and I have signal in the surrounds when I want it in the rear and the setting that allows you to swap the rear and surround channels disappears.

Is there any way that I can set Roon to output 5.1 instead of 7.1 (so that the Auro-3D upmixer will engage) and have the rear channel signal sent to the Rear speakers instead of the surrounds?

2

In the DSP for the device, under Procedural EQ, you can add an EQ called Mix which might let you do what you want.

3

What’s your multichannel endpoint? I assume, that you are using hdmi?
If so, I’ve the best experience to use a small PC with Rock on it, which don’t produce for me a wrong channel mapping.

4

Either I didn’t do it right or it doesn’t work in this instance. What I did is to use the Mix EQ and swapped each rear for surround and vice-versa, but that had the effect of making all four channels silent.

6

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