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jale01
Contributor I
February 11, 2019

Sonos Amp and 3rd party subwoofer issue

  • February 11, 2019
  • 121 replies
  • 44174 views
Hi!

I am having issues connecting my Sonos Amp (Black) to my Klipsch SW-311 10-Inch Subwoofer (or vice-versa). I currently have two Klipsch speakers and the Klipsch Subwoofer connected to the Sonos Amp. Both speakers play but I am getting no sound from the subwoofer. The subwoofer is connected to the sub port on the Sonos Amp and the LFE port on the sub. The sub plays when connected to my Yamaha system but doesn't play when connected to the Sonos Amp.

Is my sub's connection wrong? Will a sub with a built-in amp not work with the Sonos Amp? What am I doing wrong?

Help please...




Jale01
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    121 replies

    Keith N
    Keith N
    Sonos Staff
    February 15, 2019
    Hey there, jale01. While attempting to play audio to the Klipsch subwoofer, please submit a diagnostic report and reply here with the confirmation number. I'll be happy to take a closer look and point you in the right direction. The Sub Out of the back of the Amp is line level so it should work with no problem when plugged into the LFE port.
    Building community is like building a garden. You build the frame, till the ground, plant the seeds, feed the plants & sometimes you gotta pull the weeds.
      Herbstc
      Contributor I
      February 16, 2019
      I am having the same issue with my infinity subwoofer.
        Airgetlam
        Airgetlam
        February 16, 2019
        Perhaps following the suggestion in the post previous to yours might be a first step?
        Bruce
          jale01Author
          Contributor I
          February 28, 2019
          Hi Keith N,

          Thanks a lot for reaching out.

          Here's the diagnostics confirmation number: 954397645
          User320071
          Contributor I
          March 23, 2019
          I am having the same issue with my SA subwoofer.
          Airgetlam
          Airgetlam
          March 23, 2019
          I’d still recommend following the suggestion made by Keith a few posts above yours.
          Bruce
          FransdV
          Lyricist II
          April 19, 2019
          Same issue here, new Sonos amp, connected 3rd party sub to the sub out but no joy. The sub works if I provide signal from another source.
          I can submit diagnostics but looks like people having done that earlier in this thread have had no response......
            FransdV
            Lyricist II
            April 19, 2019
            Just sent my diags. # 851627850
            pwt
            pwt
            Virtuoso
            April 19, 2019
            Just to check the obvious: I assume you have enabled the sub output:
            Settings > Room Settings > [Room Name] > Advanced Audio > Sub Settings > Sub.
            4 x P:5 | Sub | 4 x P:1 | 3 x Connect | 2 x Boost | Connect:Amp | 2 x One | Amp | Move | Port | Era 300
            Mil352
            Lyricist I
            May 3, 2019
            Thanks PWT,
            I have a similar issue (only recent, subwoofer worked well for years) with an Amp and a correctly wired subwoofer in a 2.1 configuration. Subwoofer is working fine on alternative sources.The signal from the Sonos amp has become "weak" to non-existing. The cable is ok, the amplifier from the sub is ok. The issue seems to be inside the Sonos Amp.
            Funny enough, my Sonos controller on my Android phone doesn't offer me the option of "Sub Settings". My other Sonos controllers don't even have advanced setting anymore.
            Dear Keith here comes my diagnostics number. The issue is in "Esszimmer".
            2098923083
            Looking forward to read from you,
            Cheers, Emile
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