Hi @turboburro 

Welcome to the Sonos Community!

Sorry to hear of this audio quality issue you are having with your Beam.

First, as a very slightly delayed repetition of the audio feed can make it sound metallic, I want you to please ensure that the TV’s audio is not also coming from the TV itself. If it is, please see if you can disable the TV’s speakers in the TV’s sound settings.

Assuming that was not the issue, next, please unplug the TV from power for a full minute - this will make the TV’s software restart in a way that standby does not achieve.

Test afterwards - if the issue is still present, please reboot the Beam by removing power for a moment.

Please test again. As a last resort, if you still hear the metallic sound, please perform a factory reset of the Beam. You will then need to add the Beam back on to your Sonos system as if it were new - please ensure the Sonos app is connected to the reset of your Sonos system before setting up the Beam again.

If the issue persists, I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.

I hope this helps.

Hi @turboburro 

I should also add that if the metallic quality is only heard under certain circumstances, it may be a result of the Beam trying to virtualise surround audio - changing audio format for these circumstances to stereo may help, or even adding physical surround speakers.

I hope this helps.

Hi @Corry P

Thanks for the reply. I did power cycle and factory reset both my TV and Beam, but still running into that metallic sound - specifically the background stadium noise in sporting events.

On my Sony TV, the digital audio out settings can be Auto 1 (output compressed audio without change), Auto 2 (output only compressed audio for multi-channel content without change), and PCM (always output in PCM). I currently have it set at Auto 1 and the Dolby Digital Plus output is active (I can also change this to just Dolby Digital). 

Is there another audio output format I can check or setting that may help? 
 

Thanks again. 

Hi @turboburro 

That’s the only likely setting that will effect the format of the delivered audio.

Thanks for trying those steps - as they did not work, I think I know the problem. We are aware of an issue whereby Beam Gen 2 will sometimes deliver metallic-sounding audio and are investigating. I have tagged this thread with the issue tracker and will inform you here when I hear of it’s resolution, but there's no estimate of when this might be.

In the meantime, it’s possible that you could workaround this issue by using the supplied optical adaptor to connect to your TV. Note that doing so will restrict you to PCM, Dolby Digital 5.1 and DTS 5.1 formats only, and positive results have not been 100%.

I hope this helps.