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Ghh72
Contributor I
March 6, 2026
Answered

sonos era 100 pair issue. plays from one speaker only

  • March 6, 2026
  • 11 replies
  • 226 views

I am trying to connect a stereo pair of Sonos era 100 to rega turntable with rega pre amp and Sonos line in cable. 

When I play as pair sound coming from non line in speaker only. Can have them playing together as a group but not stereo pair. 

 

Sonos technical team not yet been able to resolve. 

 

Have tried changing both to 2.4ghz. Unpair then repair. Tried changing autoplay, delay, factory reset. 

 

Line in showing as right speaker, have read this may be issue and needs to show as left, cannot change this setting though. 

 

Anyone got any new ideas?

 

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Best answer by Stanley_4

Something quite wrong / odd, best to call Sonos support on Monday. 

11 replies

Stanley_4
Stanley_4
Grand Maestro
March 6, 2026

Do both work, as a stereo Pair, when streaming? If that works then try these:

Are you sure the 3.5 mm cable you are using is stereo? That it is fully seated in the 3.5 mm socket?

The line-in should show as active on either speaker, the one the adapter is plugged into.

If all that is good try swapping the right and left connectors on the 3.5 mm cable where they connect to the preamp.

Next try swapping at the input to the preamp, and last at the turntable.

    Ghh72Author
    Contributor I
    March 6, 2026

    Hi. 

     

    Thanks for the reply. 

     

    Both work as stereo pair when on Spotify. 

     

    Will try switching cables again, tried previously as still the same, plays from non line in connected speaker  

      nik9669a
      Senior Virtuoso
      March 6, 2026

      Double check too that all app’s and devices are up to date. But my suspicion is a cable or a connector, or possibly the cables on the cartridge on the turntable. 

        jgatie
        jgatie
        March 6, 2026

        Make sure the cables are inserted the full amount, especially the 3.5 mm end into the adapter.  Also, check that your cables are stereo.  The 3.5 mm end should have two black bands (see right below) vs. one black band (see left):

         

          AjTrek1
          AjTrek1
          March 6, 2026

          Is the Rega pre-amp you refer to built-in or outboard. If the latter which model?

          If pre-amp is built-in and the RCA’s are not hardwired you need a 3rd party RCA to 3.5mm cable to attach to the Sonos line-in adapter.

          Otherwise please explain the Rega turntable and pre-amp configuration.

          Together Everyone Achieves More = T.E.A.M.
            Ghh72Author
            Contributor I
            March 6, 2026

            Thanks for all your replies. The pre amp is rega a2d. Not built in. Checked and is stereo connector. 

            Have tried resetting the speakers. Pair. Unpair. 

             

            Having no luck. 

            nik9669a
            Senior Virtuoso
            March 6, 2026

            Thanks for all your replies. The pre amp is rega a2d. Not built in. Checked and is stereo connector. 

            Have tried resetting the speakers. Pair. Unpair. 

             

            Having no luck. 

            Did you try unplugging and then reconnecting cables to ensure they’re fully seated? What happened when you switched the left and right rca connectors on the outputs on the preamp? Did you check the cartridge connections? 

            Ghh72Author
            Contributor I
            March 8, 2026

            Thanks 

            Have tried the cables and even replaced them, no change. 

            When I switch left and right RCA just plays from same speaker. 

            Tried switching line in to other speaker, still not fixed. 

             

            Stanley_4
            Stanley_4Answer
            Grand Maestro
            March 8, 2026

            Something quite wrong / odd, best to call Sonos support on Monday. 

              Ghh72Author
              Contributor I
              March 23, 2026

              In case anyone else has this issue. 

              I have now sorted the issue. 

              I had one speaker sat next to a TV, moved the peaker about 1 foot away from the TV and now both Sonos are speaking to each other and all working. 

                Show more replies
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