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Contributor I
Oct 4, 2026 9:46 PM UTC
Answered

arc ultra

I have the arc ultra soundbar positioned as recommended by Sonos in front of tv to the correct measurements.

I find that the volume level constantly drops while watching certain programmes especially music programmes where either the vocal or soundtrack is lower and the balance never seems right.

i have tried various settings and I can’t find a good balance.

the hdmi lead connects to the e arc port and the tv is an lg55 ultra hd model which is about 5 years old.

i have tried tru play and adjusting the eq settings but to no avail.

any advice would be welcome.

Airgetlam
AirgetlamAnswer
Oct 4, 2026 10:09 PM UTC

Rather than relying on a crowd sourced probability, I would recommend that you submit a system diagnostic within 10 minutes of reproducing the issue, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Bruce

5 replies

Airgetlam
AirgetlamAnswer
Oct 4, 2026 10:09 PM UTC

Rather than relying on a crowd sourced probability, I would recommend that you submit a system diagnostic within 10 minutes of reproducing the issue, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

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Bruce
AjTrek1
Oct 4, 2026 10:21 PM UTC

So you’re saying it’s not occurring on all programs. Is the volume drop consistent with specific programs such as always with program A but never with program B?

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Jd70Author
Contributor I
Oct 4, 2026 10:52 PM UTC

So basically it’s an ongoing problem, not constant but is more noticeable on music or live sport where there are various volume input such as commentary and crowd noise or on 

music where there are vocals and instruments.

 

For some reason the soundbar seems to highlight one or the other without a equal level.

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Stanley_4
Grand Maestro
Oct 4, 2026 11:06 PM UTC

If you watch the Sonos controller's Room screen does the signal type shown there change when the sound does?

If you play the same content again does the sound change in the same places?

Do you have any voice assistants enabled?

The diagnostic and support call may be the most effective option. Make sure to,capture the diagnostic within a few minutes of the problem. Sooner is better, 10 minutes is likely too late. Sending several wouldn't hurt, note the numbers and 2hat was going wrong for each. 

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Palco
Prominent Collaborator II
Oct 4, 2026 11:20 PM UTC

You might also want to try it with a different TV, if you have one... and I’d also check the TV's audio settings... I recall dealing with this on an LG TV in the past... and with a 5-year-old model, there could be a firmware issue somewhere (I don't use LG myself).

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