Odd rumbling sound

[DelClark]

Try putting something heavy where you were standing?

What I was thinking. I have moved the coffee table & sofa forward, will try again later, not an ideal setup.
Looks like I am in for some serious furniture rearranging this weekend
🙂

 

[Al ears]

OK,
I have continued to experiment with speaker placements, even drawing the curtains Opening/closing doors.
And have found that if I stand in front of the speakers in a certain spot it pretty much goes, so I wonder is it is something to do with the laminate flooring vibrating ??
I will try the spikes as it cost nowt anyway.
Else I will just have to stand in that spot to listen to Dark Side 🙂

Just remember, if it is that, spikes are designed to couple and what you need to do is de-couple speakers from the floor.