R. Totale wrote:


They also
made turntables which operated correctly, and when you played a record
on one of those the inner tracks had no more distortion than the outer
tracks, and repeated plays did not spoil the grooves on the innermost
tracks. They still make them today. But, then and now, turntables
which work correctly are more expensive and harder to set up.

You really need to read up on vinyl technology. Loss of high frequencies
and dynamic range on the inner grooves of a LP is well-understood, and
absolutely inherent in the technology. There are several AES papers by Ben
Bauer (one of the all-time experts in LP technology from CBS labs) that
describe this problem and its ramifications in great detail.

Basically, the inner grooves of an LP travel past the stylus at a far lower
linear speed - something like half. Your 33 1/3 rpm LP becomes more like a
16 rpm LP.

The diameter of the stylus effectively doubles so it can't track high
frequency undulations nearly as well.

I'm sure you've been told that there are magic turntables that can overcome
this inherent problem. Anybody who tells you that is either ignorant of the
basics of LP technology or a liar.

Do the math.