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Answered

Dual Subs on Sonos AMP for "Stereo Bass"?

  • March 15, 2026
  • 3 replies
  • 76 views
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Hi all 

 

I’ve searched for an answer high and low on here - couldnt find an answer. Question is not for a home theater setup.  My Sonos AMP is not connected to my TV. 

 

Question for Stereo playback case (ie: streaming music off Apple Music directly off the S2 app) on the Sonos Amp - hooked up to a pair of passive speakers. I already have Sub 4 hooked up. 

 

If I were to add a second sub (Gen 3 or a Sub 4), would the bass be split up into Left and Right channels between the two subs (ie: stereo)? Or each sub would be receiving the entirety of the bass (ie: mono).

 

 

Best answer by Stanley_4

I don't recall seeing anything that supports stereo LFE channels, all are I recall are mono.

You might be able to create a Frankenstein setup by using speaker-level passive subs in-line with your speakers. Don't think they are common these days but I had one back in the 70s (by BSR?) that worked reasonably well.

Still given the non-directionalty of low frequencies and the challenge of placement for both stereo imaging and room modes using them would be challenging and likely not sonically productive.

 

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3 replies

Airgetlam
  • Airgetlam
  • March 15, 2026

No, the system you want is not supported by Sonos software. The only way to use two subwoofers is in a home theater setup, as described by Sonos. 

Bruce
Airgetlam
  • Airgetlam
  • March 15, 2026

You may want to refer to:

https://support.sonos.com/en-us/article/set-up-your-sonos-sub

Note that the Sonos Amp is only mentioned in a home theater context. 

Bruce
Stanley_4
  • Stanley_4
  • Grand Maestro
  • Answer
  • March 15, 2026

I don't recall seeing anything that supports stereo LFE channels, all are I recall are mono.

You might be able to create a Frankenstein setup by using speaker-level passive subs in-line with your speakers. Don't think they are common these days but I had one back in the 70s (by BSR?) that worked reasonably well.

Still given the non-directionalty of low frequencies and the challenge of placement for both stereo imaging and room modes using them would be challenging and likely not sonically productive.

 

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