Even the Fideliums are sentitve to vibration.
The top of my amplifier is always removed, exposing the
speaker connections inside, at the rear.
I attached some clamps to both sets: the ones
connecting the cables and the unused ones.
So, one clamp covers the l and r channels of the
former set, and a second clamp connecting the
two posts of the latter.
The sound has become even clearer, with better focus.