Are you sure its the sub?

I have an Outlaw sub and only have the volume on its amp turned to 1.75, yet when I turn up the volume with Bass heavy tracks I also get an annoying rattling noise...

I found taking the metal framed pictures off the wall resolved the Subwoofers issue wink

snazzed

For clarity: The picture frames were vibrating against the wall.

M22, VP150, QS8 <--all v2
Sub: Outlaw LFM1-Plus
Denon AVR1910, Sony X900-65"