Question Logitech Z906 + Xgimi horizon pro = no surround?

Jun 12, 2022
As the title states I have a Xgimi horizon pro projector and a Logitech Z906 sound system that I've connected using an optical toslink cable.

In the projector sound options I can choose SPDIF or ARC as output and PCM or auto as output format.
I've set these to SPDIF and auto.

But I can't get true surround to work.
Is this an incompatibility issue or is something not working as it's supposed to?

I downloaded some test files and the way I have things set up right now allows surround when it's dts, dts-hd and dolby digital. But not dolby trueHD.
I've got some files that (afaik) are AAC-LC which don't play with surround. And the apps on the projector (amazon prime, netflix) won't play surround either.
Hope this info helps anyone with more knowledge on the subject.
Last edited:


Best place to start is support contacts for the projector. Normally using optical does not work for surround sound unless it's PCM but then the source you are using also needs to be sending the right signal to the hardware as well.
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