[Arny Krueger]

"drichard" wrote in message
oups.com

On Jun 29, 10:22 pm, "William Sommerwerck"
wrote:

There are good reasons why a high-quality audiophile
turntable might very well be better than a Neumann. To
wit, having a plastic platter that makes a good
impedance match with the vinyl of the LP.

Impedance match??? Between the vinyl disc and the
platter? Please explain.

There is a belief that the vinyl record is vibrating to a significant degree
when it is being played. If this is true, then damping this vibration would
be a good idea.

Just like the electrical impedances we are familiar with, there are also
such a thing as mechanical impedance.

http://en.wikipedia.org/wiki/Mechanical_impedance

Damping works best when there is a a match between the mechanical impedance
of the vibrating object and the substance providing the damping.