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SoundJoost
Contributor I
September 15, 2025

Arc is not connecting (anymore) to AMP

I am totally lost, I have two surround systems that are working fine. Surround 1 is with an Arc ultra and ceiling speakers with AMP and surround 2 system is with a ARC and ceiling speakers with AMP.

After rewiring one set of speakers to the surround 2 system it still worked fine. Now out of the blue I have no more surround sound. The speakers by itself make sounds but as soon as I add them as surround they are gone.

I have been through the complete forum and tried it all. Factory reset, music level to 15, music from Ambient to Full.

I think I reconnected the AMP like 20 times now but still nothing. What puzzles me is that it worked fine and now it doesn't.

Honestly, I have no clue what to do next, what am I missing here… Been working on it for hours now and just have no idea what is going on. Especially since the other surround system is working totally fine...

Maybe some interesting items:

  1. Speakers has not been moved
  2. no new internet or router
  3. Both ARC and AMP are connected to Ethernet, not changes here
  4. Tried Music, TV, Atmos, 5.1, FULL music, nothing after adding the speakers as surround 
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Mr. T
Mr. T
September 16, 2025

The issue is with the Arc and Amp, not the Arc Ultra (recent posts above incorrectly referencing Arc Ultra)

 

For the troublesome surround Amp, how far away is it from the Arc?

I just came off the phone with sonos and after 45 minutes they did say the ARC and AMP may be out of reach. I ended the call, moved the ARC almost on top of the AMP and still nothing. I have several more amps for ceiling speakers, none of them works as surround but they do as stand alone. I am out of ideas… I almost get the idea something is wrong with the ARC? 

I will leave it unplugged for the nigth, another day tomorrow I guess. Still weird since it did work for a while. so confused. 

You say you have several Amps. Are they all in a rack together and are all of them wired?

I’d actually try disabling Wi-Fi on both the Arc and the Amp as they are both wired. From the support suggestion, the Arc is still trying to communicate using it’s radio. If that doesn’t work, then re-enable Wi-Fi on the Arc and disconnect Ethernet from Amp whilst Arc and Amp are in close proximity of one another.

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