Strange noise at the subwoofer. What could that be?

bl
4

I have a strange noise on the subwoofer. Where can that come from?

Windows 10 laptop with a Behringher U-PHORIA UMC204

have an XTrust system behind it → Audio left and right are connected from the UMC204 output via the subwoofer with integrated amplification (including subwoofer). The interface is connected via USB to the laptop.

Full gain is in the subwoofer.

https://streamable.com/8u5pa

Ca

Is the problem synonymous with battery operation?

bl

Unfortunately yes,

just played a game, but it's still audible…

if it's a constant noise, that's not such a big problem.

It has as you can hear in the video a rhythmic character.

Smartphone is not esd…

I can vlt turn off my WLAN and test

bl

With switched off WLAN (Smartphone, as well as laptop) the disturbance persists. As well as with LAN off…

When I unplug the audio interface, the "noise" persists.

→ It must be independent of the interface and laptop

I just do not know why that is.

Nevertheless, thanks for the help.

Ca

It could've worked…

New trial:

Is the problem even if you stick the system off the laptop?

If yes: Trust halt (gaming hardware…)

If not, let's see.