Contributor I

Answered

Arc ultra Sub 4 and Era 300 synchronisation issues

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I have the Arc Ultra/Sub 4 and Era 300

I have just removed the Era 300s from surround sound as it is so bad I can’t bear to listen to it any more. I think it is something like a synchronisation issue but the sound is horrendous. Anyone experienced this?

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Jeremy HunterAnswer

Contributor I

Okay I think I have resolved the issue.
As the Arc Ultra is hard wired to the router I had disabled WiFi on it. Whilst the system appears to still work and you get sound etc from the rears, it does not work correctly and from what I am reading, the Arc controls the other speakers via its own network so without WiFi enabled the rears must have been using the router WiFi and this caused the synchronisation issues.

AjTrek1

Would you care to elaborate as to what you mean by “sound is horrendous” with Era 300’s as surrounds. Many people in this community have Era 300’s as surrounds with both the Arc and Arc Ultra (present company included) and it’s extremely rare that the sound has been characterized as horrendous. In fact I can’t recall “horrendous” ever having been used to characterize the sound. 🤔

What are you listening to:

Music (stereo or Atmos)
Movies (Stereo, Dolby Digital, Atmos)

Together Everyone Achieves More = T.E.A.M.

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GuitarSuperstar

Lead Maestro

Make sure you have actually added the Era 300s as surrounds and not just grouped them:

https://support.sonos.com/en-us/article/add-surround-speakers-to-a-sonos-home-theater

"Receive with simplicity everything that happens to you." - Rashi

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Jeremy HunterAuthor

Contributor I

When I say horrendous, it is difficult to explain but I am watching movies or TV mainly. (I will do some tests with music tomorrow)

it is almost as though there is a synchronisation issue and it is making sounds from the rears (Era 300) that just don’t sound right.

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Jeremy HunterAuthor

Contributor I

And yes they were added as surrounds and not grouped

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GuitarSuperstar

Lead Maestro

What model TV do you have? How exactly are you streaming TV and movies?

"Receive with simplicity everything that happens to you." - Rashi

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Jeremy HunterAuthor

Contributor I

When I say horrendous, it is difficult to explain but I am watching movies or TV mainly. (I will do some tests with music tomorrow)

it is almost as though there is a synchronisation issue and it is making sounds from the rears (Era 300) that just don’t sound right.

When I say horrendous, it is difficult to explain but I am watching movies or TV mainly. (I will do some tests with music tomorrow)

it is almost as though there is a synchronisation issue and it is making sounds from the rears (Era 300) that just don’t sound right.

Stanley_4

Grand Maestro

Get it to sound bad, submit a diagnostic quickly and call Support when you can.

It shouldn’t sound bad, my new pair sounds fine.

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Jeremy HunterAuthor

Contributor I

What model TV do you have? How exactly are you streaming TV and movies?

I have the latest LG G4 with latest HDMI and have upgraded streaming services such as Netflix for best sound

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GuitarSuperstar

Lead Maestro

What model TV do you have? How exactly are you streaming TV and movies?

I have the latest LG G4 with latest HDMI and have upgraded streaming services such as Netflix for best sound

Make sure the TV is set to these settings:

HDMI Input Audio Format: Bitstream

Digital Sound Output: Pass Through

eARC Support: On

If you want Dolby Atmos audio from Netflix, be sure you have the Premium subscription.

"Receive with simplicity everything that happens to you." - Rashi

Ken_Griffiths

I have a ‘similar’ Sonos setup, except using a Sub (gen 3), rather than a Sub 4 and it sounds absolutely perfect here… so I agree with @Stanley_4, it’s probably best to reproduce the issue(s) and then immediately submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to help you to resolve the issue.

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