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DttaM

macrumors newbie
Original poster
Aug 2, 2019
1
0
Deal Ladies and Gentlemen,

I bought the Kanex Digital Audio Adapter in order to connect the Apple TV 4 to my video projector BenQ TH 683 and my AV-Receiver Yamaha RX-V363 via Toslink. Airplay worked via Toslink, until I connected HDMI to the Kanex Adapter. From then on the Audio was send to the Projectors built in speakers and the AV-Rceiver via Toslink went silent. Which was obviously not the intended way. After two days of switching every possible setting, preference and setup on the Apple TV, the BenQ Projector and the Yamaha Receiver, I started trying crazy things like, connecting the 3.5mm analog exit of the kanex to my AV-Receiver via cinch cable. It worked. And now it gets really weird: I switched back to the channel where the Toslink digital audio was connected and it worked too. Now I disconnected the cinch cables from the AV-Receiver and it still worked. Audio was coming from the AV-Receiver and the Projectors built in speakers. Then I disconnected the 3.5mm plug from the Kanex‘ output (Toslink still connected to the AV-Receiver, HDMI still connected to the projector) and audio was again only coming from the projectors built ins. AV-Receiver silent. I tried a few more times. With HDMI connected, Toslink Audio only works with 3.5mm plugged AND! having been connected with the cinch cables, once connected I can remove the side with the cinch cables from the receiver and leave the 3.5mm connected, it still works via Toslink.

My question now: Is it intended that way? (Asking ironically) And is the Toslink digital audio signal 5.1 if it needs the 3.5 stereo plug to work?

Thanks and best regards,
Matt
 
Play some 2.0 clips on the ATV and check if that changes anything. What you describe shouldn't be normal. Do you actually get 5.1 when forcing the 3.5mm plug? My guess is the 3.5mm cable is somehow forcing the Kanex to forward 2.0 audio and when it's not used, the ATV is sending something else, that the Kanex can't process. It's only meant for basic 5.1, no Atmos, MAT, etc. and it's also limiting video to 8 Bit.
 
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