HDMI playback issue [Resolved] with MacOS midi audio settings

Support
1

Roon Core Machine

MacBook Pro, mid-2014, running OS 11.6.8

Networking Gear & Setup Details

MBP connected to NAD 758v3 via HDMI, also on gigabit Ethernet

Connected Audio Devices

NAD T758v3 via HDMI (for multichannel) gigabit Ethernet, gigabit Ethernet to a RoPiee raspberry pi in another room.

Number of Tracks in Library

38,000

Description of Issue

Been struggling for 2 weeks to get the system to properly play back 5.1 from ripped SACDs. Briefly seemed to work after connecting to HT receiver via HDMI instead of Ethernet and messing with a few settings.

Now when I play anything in Roon over HDMI, I get about second of playback followed by a few seconds of low-level white noise, and it keeps repeating like that.

I have power-cycled both the Core and the receiver. I have disconnected and re-connected the HDMI cable. I have toggled exclusive mode. When I connect the Core to the receiver via Ethernet, it plays back 2-channel content properly, but of course downmixes multi source content to 2 channels.

This has been incredibly frustrating. Any assistance would be greatly appreciated.

2

I think I figured out the problem – In my Mac’s midi settings, it was specifying the wrong sample rate – changed that and finally got uninterrupted output.

(Hope this helps someone else figure out this issue faster…)

3

As with most things in hardware and software all the stars and planets must align to make things work.

glad you got it sorted… HDMI is a can of worms at the best of time.

4

So it seems.

It would sure be a lot easier to manage all of this if Roon could send multichannel content over Ethernet. Is there some non-negotiable hardware constraint that makes that impossible, or is it just a question of adding that capability at the software level?

5

I think its more down to the ability of the end point.

6

It can, and does - if the endpoint knows what to do with it.

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