Twice now I have woken up in the middle of the night to a thunderous sound. It sounds literally like thunder and a storm outside until I look out the window and see all is calm. Then I walk downstairs to the other side of the house where the kitchen is and as I approach there is a loud, thumping, thunderous sound - like hell itself - coming from the stereo pair of Play 5 speakers (gen 2).



As far as I can tell, the volume is on full and the sound is so intense that both times I did not have the chance to check the app and see what the source was. I could not use the buttons on the top of the Play 5 to stop, I had to unplug both from the wall socket individually. So far it has not appeared to break the speaker but I fear the next time it might happen.



Here are some other facts that maybe useful in the analysis of the problem:

1. Both speakers are more than 1year old

2. They have only recently (2 weeks ago) been coupled into a stereo pair (previously they were used in separate rooms)

3. One speaker is attached via optical cable to a brand new Samsung 32 inch series 5 led TV

4. To make that connection, we use an optical to headphone jack DAC converter

5. They are connected to internet via the SONOS Boost whereas the TV in the kitchen is connected to the internet via LAN

6. I think on the occasion the problem occurs (in any case this last time) we were watching YouTube on TV so the speakers were set to TV Kitchen line in

7. None of our other SONOS speakers (we have many Play 1s, 3s, a sub and a playbar scattered around the house) are affected

8. We are using Alexa control and have 2 echo dots in the house as well as - in the kitchen no less - an Echo Show and use all 3 to control our SONOS speakers (SONOS skill enabled)



I am very eager to get to the bottom of the this before we either seriously damage 2 expensive Play 5s and / or start to get angry neighbors.



Your help is much appreciated!