[Arny Krueger]

"William Sommerwerck" wrote in
message
OK, so you get substantially all unwanted acoustic
energy
out of the vinyl and into the platter by matching the
acoustic impedance. But where does it then go?

What a load of crap. Guffaw.

I've got a great suggestion for you. Replace the coax
that connects your cable system to your TV with coax
having a significantly different impedance. What do you
see?

Not a heck of a lot of difference. For example, if you replace 20' of coax
with 50' of 300 ohm twin lead, or 300 ohm twin lead with 110 ohm twisted
pair, or coax or twin lead with 18 gauge lamp cord, and signal strengths are
adequate and EMI is reasoanble, then there will probably be no visible
difference.

If you want to see standing waves due to impedance mismatches really make a
difference, do the same thing with a computer network, or a video cable
going to a high resolution analog video monitor. Traditional TV signals
just aren't all that picky.

The mechanical principle is exactly the same as the
electrical..

Mechanical impedances vary far more than the electrical impedances of common
cables.