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bcorrigan78
Contributor I
October 2, 2019
Answered

Connect:Amp Direct Line Input Delay to Wired Speakers

  • October 2, 2019
  • 23 replies
  • 1261 views
Hello Sonos,
For the past few years I've used the line input on a Connect:Amp to power a left and right wired speaker with no issues. Recently, I started to notice a clear and obvious major delay from the line input source to the wired speakers. I do not have any other Sonos speakers connected wirelessly.

I originally thought this was from my computer or a USB preamp I have for conference calls, but if I test the actual wired input (1/8" male jack from my computer headphone out to RCA left/right male in to the Connect:Amp) simply by touching the input to hear a buzz...there is now a 5 second delay to the wired speakers. This was not the case for 5+ years and just started happening about 3 weeks ago.

I should note that streaming music from Apple Music or Spotify has no delay...I can press start and stop and the music stops immediately and pairs with other Sonos Play:1 and 3's I have. Only when I use the line input directly to the wired speakers is there an issue.

Is there a new firmware patch that could have caused this issue?

I recently purchased a brand new Connect:Amp to see if it was a hardware problem with the one I have that is 5 years old...same exact issue right out of the box.

Thank you so much for any suggestions you have.
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    Best answer by ratty
    Change the Line-In compression setting to Uncompressed. It sounds like it's on Automatic and, for some reason, has decided to apply compression.

    Settings -> System -> Audio Compression

    23 replies

    ratty
    rattyAnswer
    October 2, 2019
    Change the Line-In compression setting to Uncompressed. It sounds like it's on Automatic and, for some reason, has decided to apply compression.

    Settings -> System -> Audio Compression
      Ken_Griffiths
      Ken_Griffiths
      October 2, 2019
      This may not apply, but one other additional thought, just to add to what @ratty has mentioned above, is perhaps to also ensure that ‘AirPlay Device’ has not been selected as the Line-In ‘Source Name‘ as that also will increase the Line in audio buffer and delay the output.

      Such selected ‘source names’ chosen, can be custom named also, so it may pay just to check that aspect.
      ratty
      ratty
      October 2, 2019
      'AiirPlay Device' would be consistent with a 0.5s delay, rather than 5s.
      Ken_Griffiths
      Ken_Griffiths
      October 2, 2019
      That’s why I mentioned it was just to ‘add’ to your suggestion @ratty.
      bcorrigan78Author
      Contributor I
      October 15, 2019

      Thank you Ratty and Ken for both of your support. 

      100% fixed now after changing the compression to “Uncompressed”.  Woo hoo! 

      I’m so pumped it’s back to normal now! 

      ------

      Change the Line-In compression setting to Uncompressed. It sounds like it's on Automatic and, for some reason, has decided to apply compression.

      Settings -> System -> Audio Compression

      piano_grand
      Lyricist III
      January 11, 2020

      Just wanted to see about this myself. Same scenario - running a Connect Amp for many years without issues. I just did a reset on the device when I added it to another system and I’m getting a delay on my system regardless of Automatic, Uncompressed, or Compressed - about three seconds.

      It was working fine without delay (analog ins) before I:

      Reset the system
      Added a new Sonos ONE to the system. (Removing it didn’t change anything).

      The new SonosONE is not grouped either - but when I do group then - it’s in sync - also 3 seconds behind.

      I’m curious if adding a new device to the system is the issue? Even ungrouped?

      Thanks,

      John B
      January 11, 2020

      There is a current bug causing this. Behaves like compressed when set to uncompressed.  Sonos are working on a fix. 

        vanhauen
        Lyricist II
        January 13, 2020

        I’m having the same issue after years of trouble-free use. I’ve had to unplug my Play 5 (2nd Gen) stereo pair from the TV and go back to using built-in audio 😞

        Sonos, PLEASE get this issue resolved ASAP 🙏

        Kumar
        January 13, 2020

        There is a current bug causing this. Behaves like compressed when set to uncompressed.  Sonos are working on a fix. 

        Is this bug invoked on its own somehow, or only if someone has toggled from one to the other? I thought the latter, that only if one has toggled away from uncompressed, toggling back to it isn't successful. Could be wrong though.

        And it is applied to the entire system; so does the setting get disturbed if any unit in the system is factory reset?

        piano_grand
        Lyricist III
        January 13, 2020

        I’ve opened a case with a diagnostic - (01447263) - but support is asking me to start from scratch on troubleshooting whereas I’m asking them to validate that this is a known issue. I’ve been “okay” with the 70ms delay - what I’m not okay with is the 3-5 second delay that is now being introduced after years with it working as designed.

        Thanks!

        _DS

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