Small comment on MrWoppit’s setup. It looks like you have the stands on spikes on tiles. My inclination would be to remove the spikes and seat the stands on blobs of bluetac. Many will disagree.
I love playing about with this.
All totally subjective, on sprung wooden floors and the only tools I have for measuring floor and cab vibration are my hands, but…
Spikes seem to transfer the most energy to the floor.
BluTac, or even better, Sorbothane seems to transfer much less.
You can feel the difference by hand.
A granite board under the speaker makes a huge difference too.
Have ended up with Sorbothane pads between the speaker and the granite board, which sit on soft felt pads for ease of positioning.
Whatever you prefer will be a compromise between cab and floor vibration.
On an acoustically inert floor, spiking direct would seem to be the logical solution to reducing cab vibration, the floor being taken out of the equation.
What do you reckon?