Inability to play songs above 48/24 resolution (ref#M55FEQ)

Hi! What’s not quite right with Roon?

· None of the above quite fits

None of the above quite fits

· None of these quite match

Tell us what's going on

· System will not play songs above 48/24 resolution

Tell us about your home network

· all ethernet, netgear 105 switch connecting core and active digital speakers

I have a baetis audio computer as roon core connected to dutch dutch 8c speakers via aes output on baetis computer using analysis plus digital crystal cables xlr cables. Via ethernet, I can play every format no problem, but via aes connection, nothing plays above 48/24. With 96/24 there are frequent skips during song and 192/24 makes no sound during playback.

Local files or streaming service?
If the latter what is max streaming set for under setting: service?

It is occurring with local files and streaming Qobuz and Tidal tracks.

In device setup, AES connection is set to 192/24.

Can you provide a screenshot of your signal path showing it only playing at 48/24?

Hmm, interesting.
Apparently up to sn2000 they only support 96/24 over aes and that’s individual.
I wonder if they are like the Devialet Phantoms and when you connect a stereo pair it is halved.
Which would be 48/24.

I hope that’s not the case. But, I have reached out to D&D NA to see if they can help. I’m waiting to hear from them.

This is not the root cause of the issue, but inputing >48 kHz audio is superfluous, as the Dutch & Dutch internal DSP sample rate is a static 48 kHz for all sources. As such, Roon DSP ideally should be configured to sample rate convert all sources to 24 bit 48 kHz.

I couldn’t find a setting in the web menu to change the DSP sample rate, but to see if this was the case only with analog input data—ie , to see if the analog input’s A/D converter runs only at 48kHz—I fed the speaker AES/EBU digital data sampled at 96kHz and repeated the on-axis frequency-response measurement. The result was the same: a sharp rolloff above 20kHz and a Nyquist frequency of 24kHz. As a final check, I set the 8c’s analog subwoofer output to full range with the website app and analyzed its analog output signal while I fed the speaker 96kHz digital data. There was no difference. It appears that Dutch & Dutch’s DSP operates at a fixed 48kHz sample rate, and that digital data with a higher sample rate are downsampled.

https://www.stereophile.com/content/dutch-dutch-8c-active-loudspeaker-system-measurements

AJ

1 Like

my serial numbers are 29xx

I think @WiWavelength may have nailed it but will be interesting to see what D&D actually say.

Yes, that is correct - good point! I have adjusted the sample rate to 48/24 and it is playing everything now. Thanks!

Yes, agreed. I’ll let you know.

Thank you both for the help this evening. Truly appreciated!

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