Question about noticeable abnormal sub noise...normal??

[brazosdog02]

I see. Yeah, ive done that. Im still testing that out too but thats a separate issue.

[Blutarsky]

Maybe try a different receiver, one sub at a time. Different cables too?

[curtis]

FWIW, I had a sub noise issue some years ago. I would get the noise when playing music, but whenever the TV was on, the noise would go away. So the noise was never present when watching anything.

It ended up being the standby circuit on the TV. If the TV was on, off, or unplugged....no noise. When in standby, I got the noise no matter what the source.