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Hi all.

As with other posts of this nature, I am also experiencing issues with different volume levels of the Era 300 surrounds after Trueplay tuning.

I have an Arc Ultra with 2 x Era 300’s and a Sub Gen 4. All of which sound excellent - especially with Trueplay enabled.

However….

I have tried all of the usual techniques to try and mitigate this volume issue - but so far, the situation has not improved. It’s always the left side of the acoustic that’s always louder.

I am using the latest software and hardware firmware (as of 14/03/25).

To be clear, the sound levels of the surrounds are fine without Trueplay enabled or configured.

I have also tried swapping the rear speakers around and re-configuring (to see if it’s a hardware issue) but still the same result keeps occurring.

So with this in mind, I have the following questions:

  1. is it possible to send Sonos techs diagnostics of before and after Trueplay calibration to see if there is an issue here?
  2. after Trueplay is enabled, it is impossible to tweak the volume levels of the surrounds (as Trueplay knows best 😉). Can this be altered so that either distance or volume levels can be changed for the surrounds after Trueplay calibration?

Many thanks in advance!

  1. As far as I know, yes. I don’t think only one diagnostic is stored in the Sonos db per account. If so, I’ve been incorrectly advising people for years. For a definitive answer, you’d need to speak with a Sonos rep, who has access to the data.
     
  2. As far as I know, no. Once TruePlay has been completed, you are not ‘locked out’ of making further adjustments that satisfy ‘your ears”. Sonos will due what a Sonos sound engineer thinks is ‘best’, within its capabilities, but it has no idea about your personal preferences. You may prefer slightly higher treble, or much more bass. Sonos doesn’t know. They do as much as possible to get you to a ‘normal’ sound signature, but leave it up to you to modify it to your personal needs. INHO, there’s only so much that Sonos can do, and a lot of ‘TruePlay’ is a marketing effort. It helps in a few rooms I have, it seems to make no difference in others, so I leave it off in those rooms. But TruePlay can only change things so much. There is a limit to what it can do. 

Hard to answer your second question. Is it impossible, no. Can you change settings, yes, you’re supposed to be able to, to my knowledge. I haven’t tried in a long time. 

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