No not Bluetooth.
I'm pretty good with checking for viruses and malware and it's always come up clean.
My non educated guess is the speaker.
I had a 5.1 pro media years ago without issue except the crackling when moving the volume knob.
Now the right speaker is silent as I described and the...
It's a very odd issue.
I was asleep one recent early afternoon and heard this...kinda like a fire alarm, but not a steady noise, Kinda variable, but still alarm like. I thought it was either a fire alarm, or something outside. No one came and got me and I didn't smell anything...then after...