Mackie Thump 215 static noise

What's up Livesound folks,

Recently purchased 2x Mackie Thump 215 for my 3 piece band (acoustic) along with Behringer Xenyx X2222USB mixer for live performances.

Have the material set up in my attic and experiencing some very present and disturbing static noise (floor noise).

The sound is present when there is nothing being played, but also when there's some music being played. It also occurs when the speakers are not connected to the mixer (just standalone), only power, so not related to cables or mixer I guess.

I seem to have found that some floor noise may be expected with active speakers, but I doubt if this much noise is normal.

Does anyone have the same speakers with or without this issue?

Thank you!