LSX II LT Wi-fi performance - is it weak?

I’m popping this here rather than as a support issue just to gauge others’ experiences. I bought a pair of LSX II LT for my bedroom system and I’m thrilled with them. There is however a little issue with Roon and Googlecast that makes me wonder if the Wi-fi antenna(e) is/are poor, or whether to point the finger at Google cast or Roon, or a faulty speaker.

Streaming at 44.1 or 48 seems to be faultless - steady and stable, but 96kHz streaming is very unreliable and prone to breakups and failures. The Primare NP5 Prisma MK 2 streamer that feeds my headphone set-up (and is sat on the table next to the master speaker) is rock solid over wi-fi at all resolutions up to 192/24, and I can stream 4k Netflix and Disney+ to the TV similarly glitch free.

Has anyone else had similar issues with the LSX II LT? I haven’t tried other streaming protocols as I don’t stream anything but local content with Roon (i.e., no Qobuz or Tidal to run 192k tests). At the moment I’ve used Muse to force everything down to 44.1 or 48k, and I have also tried the Primare over optical which has at least shown the speakers can play 96k flawlessly - just not over Wi-fi.

I have the LS50W2’S and they are unreliable using WiFi even when a few feet from the router, hard wired to the router and between speakers and there are no break ups.
I would test in a wired scenario to rule that out.

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Thanks. Not the easiest without moving the speakers (although I could temporarily move one of my Wi-fi Discs as a test - running the iFi Zen Stream in my office from the ethernet port of the disc sorted its Wi-fi issues).

Food for thought.

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“WiFi discs” sounds like a mesh system, its not ideal for roon to begin with.

It is Mesh I believe (based around BT Smart Hub 2 and their wi-fi discs). Works faultlessly in the rest of the house, feeding the Zen in the office and Bryston BDP-1 in the lounge from the Ethernet port on the rear of the two discs. Roon server (Mac mini) is plugged directly into the router. I think this is a ‘mileage may vary’ situation.

Setting up a wired network would be massively disruptive.

The headphone setup, which is next to one of the speakers works without issue at HiRes, I assumed, maybe wrongly, that it was also with Roon.

I know I have a different Kef wireless system to the OP but the wireless performance is dire even when both speakers are 10 feet from the router and they are maybe 6 feet apart.
The secondary speaker would often drop out. Wired they are flawless, I’m not the first owner to experience this.

My bedroom setup is a Ras Pi with an Ifi Go Bar DIY solution that suffers no dropouts on WiFi, ever, and that’s maybe 30 feet away from the router.
My Poly Mojo2 setup which is obviously WiFi has no issues either from similar distances.
This is not on a mesh system, I just have the main Virgin Media router.

The LSX II LT seem to have USB input, can @MalcolmP17 rig up another wireless input whilst they are still in situ, such as a Ras Pi, to see if they perform ok with a different wireless source?
Not sure this is possible with these speakers.
Just as a test.

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Yes, the Primare headphone set-up also uses Roon.

Thanks everyone for your help and advice.

I have tried the KEFs with the Primare on optical, playing up to 96/24 with no issues, but I lose in app volume control and auto switch on (which I’m using with HDMI for the TV). I have two tests left to do:

  1. I’ll try the same with my iPad, with the same result expected…
  2. Relocate my wi-fi disc temporarily from the office to try the wired connection.

I’m inclined to believe at the moment that the wi-fi implementation is weak rather than faulty, as they do play flawlessly over Google cast at 44.1 and 48kHz.

I can either accept downsampling the occasional hi-res album or (if test 2 works) invest in a third disc for the bedroom to ‘expose an ethernet jack’ as the Roon help pages put it. (I think that help page led me to add discs when I moved house).

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I run LSX IIs as a bedroom system with the router in the room below and an Ethernet fed mesh repeater (hardwired via a hub to a Nucleus One) in the room above them. I initially I had a few issues with drop outs regardless of bit rate (frustratingly other devices in the same position worked fine)-so I swapped the speakers around to position the main speaker closer to both the router/repeater in the vertical plane. Now they seem fine, although I run them without a cable connection so they downsample. Have you tried swapping them over?

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Update: I eventually added a MESH device (dedicated wireless bachkaul and an Ethernet port for the KEFs) and problem is sorted with stable Google cast up to 96kHz.

My router supports up to three of these, so I now have one for every endpoint/zone - one for the wired only Bryston in the lounge, one for the ifi Zen Stream in the office (flaky wi-fi worse than the KEFs), and one in the bedroom for the KEFs. Yet both my TVs stream 4k Dolby Vision over wi-fi without breaking a sweat. Grrr. :smiley: