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jale01
Contributor I
Feb 11, 2019 7:05 AM UTC

Sonos Amp and 3rd party subwoofer issue

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
    Feb 15, 2019 11:22 PM UTC
    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.
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      Herbstc
      Contributor I
      Feb 16, 2019 2:35 AM UTC
      I am having the same issue with my infinity subwoofer.
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        Airgetlam
        Airgetlam
        Feb 16, 2019 4:46 AM UTC
        Perhaps following the suggestion in the post previous to yours might be a first step?
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        Bruce
          jale01Author
          Contributor I
          Feb 28, 2019 3:48 AM UTC
          Hi Keith N,

          Thanks a lot for reaching out.

          Here's the diagnostics confirmation number: 954397645
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          User320071
          Contributor I
          Mar 23, 2019 7:31 AM UTC
          I am having the same issue with my SA subwoofer.
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          Airgetlam
          Airgetlam
          Mar 23, 2019 4:04 PM UTC
          I’d still recommend following the suggestion made by Keith a few posts above yours.
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          Bruce
          FransdV
          Lyricist II
          Apr 19, 2019 10:09 AM UTC
          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......
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            FransdV
            Lyricist II
            Apr 19, 2019 10:11 AM UTC
            Just sent my diags. # 851627850
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            pwt
            pwt
            Virtuoso
            Apr 19, 2019 12:54 PM UTC
            Just to check the obvious: I assume you have enabled the sub output:
            Settings > Room Settings > [Room Name] > Advanced Audio > Sub Settings > Sub.
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            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 4:51 PM UTC
            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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