KEF LS50 Wireless 192khz 24 bit TIDAL playback interruption after first 2 seconds

Support
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Core Machine (Operating system/System info/Roon build number)

Mac Mini 2018 Catalina, all software up to date

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Speaker and Mac connected via Ethernet Cable to Fritz Box 4040

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

KEF LS50 Wirless

Description Of Issue

Hello, I am aware that there are several posts with a similar topic, but it seems nobody has my exact problem:

I am listening via Tidal and upsampling to 192/24 and using a parametric eq in DSP. LS50 W and Macmini are connected via cable on the router, software of KEFs is p6.2101809171.105039

Upsampling works reliably in this constellation. But when I skip a song and listen to the next one 2 out of 3 times playback stops after 2 seconds for several seconds (as if it was buffering!) afterwards it plays the song without interruption. It works when I listen to a complete album, no interruptions.

Anybody else got this problem? I have a fast internet connection, so I don’t suppose it is waiting for the tidal files to load. I listen to few flacs on my harddisc, but so far it seems the problem only occurs when streaming via Tidal.

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Post your signal path screenshot.

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Bildschirmfoto 2019-10-20 um 18.16.13.jpg2354×1638 360 KB

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LS50 can only playback 192 via USB interface, if your using a Ethernet connection then 96 is your highest rate, even if you up sample, 96 is the highest. I think.

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Hi Shawn, don’t think that’s right seeing the many posts here regarding 24/192…

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Not true @Shawn_Costello. I own LS50w and play to them all the time at 192/24 via wireless Ethernet. (They also handle 192/24 via wired Ethernet and USB).

Only the Optical input is restricted to 96/24 maximum.

Maybe you are thinking of the Kef LSX?

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I own a pair also. I Was just going by their literature. I thought I read that they down sample to what they can handle on certain inputs.

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Hmm… I would like to see that literature if you’ve got a link.

Roon certainly reports that it is delivering 192/24 to them when I look at the signal path…

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Actually… looking at their literature… they do state that USB is max 192/24, and Optical Toslink is 96/24 as I mentioned… but… they don’t actually state a spec for Ethernet/Dual Wireless 2.4 GHz/5GHz Wi-Fi.

However… as I’m sure you’ve noticed… Roon’s signal path shows that it delivers 192/24 to them when you play to them via Ethernet (wired or wireless). So it’s my understanding that that’s what they receive. :slightly_smiling_face:

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I’m at work right now but I agree with your statement above. That’s what I was referring to on their website.

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So you finally found out that they take the signal as described.
:wink:

Really, nobody has the above mentioned issue?
Most of the time it happens when skipping songs, and is really annoying!

Thanks for your help!!

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Hi @AlexderK,

Thank you for your report here. We are aware of a few similar reports regarding this behavior and have reached out to KEF regarding this. In the meantime, I would verify that your LS50s are on the newest firmware available.

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Thank you!

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Hello again,

The issue was resolved with the new Roon update.

Thank you!

1 Like
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Hi @AlexderK,

Glad to hear that the new update helped with this issue!

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