I now remember another "audiophile" trick from the late 80s (or
possibly earlier). This magnificent piece of hocus pocus consisted of
sticking small (rubber? felt?) pads onto the paper of your speaker
cones - supposed to bring about " 100% improvement in sound quality" or
something. How, I don't know - perhaps adding a little more weight to
the cone? Sounded highly dubious to me, anyone else here heard of this
and /or can verify that it was a con??

regards, Ben