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wrote:
Stewart Pinkerton wrote:

Could you explain why you think LP cannot exceed CD in this category?

It's seledom denied that it has the *capability*, but it's also a
known fact that the reality is rolloff above 12-15kHz to avoid
overheating cutter heads. MFSL half-speed masters may be the
exception.

Amoung those that follow the state of the art of LP mastering it is a
known fact that this simply isn't true and hasn't been for quite some
time. None of the current audiophile mastering engineers are doing this
nor have they been. I suggest you get your facts straight before making
such absurd claims.

My facts are correct,

No they are not correct. just ask Kevin Grey, Bernie Grundman, Stan
Ricker or any other well known mastering engineer.

I don't care what they say. I have your guru Ricker's Cardas sweep record
and I ran it with several different catridges and preamps through a Lynx TWO
soundcard running at 192K sampling rate and 24 bits resolution, using Cool
Edit. There is a rolloff starting just over 14K Hz leading to a shelved
response about 5 dB down starting around 16K Hz. ALL the cartridges and
preamps behave in the same way. The record does appear get out to the 30K Hz
that it claims but it IS shelved down ~5 dB.

Lest you think all my cartridges I tried don't have good HF performance, I
will even list them.

Koetsu Urushi
Denon 103D
Shure V15V
Shure V15xMR
Electro Research EK-1 strain gauge system
Win SDT10 (strain gauge)

Preamps used:

Krell KPE reference
Classe DR5
Two of my own tube designs

The EK-1 is the only setup that gets out to 30K Hz without further rolloff.
(i.e. follows the apparent shelved response on the disc) The two moving coils
start rolling off around 25K Hz. The Shures roll off above 20K Hz. The Win
very slowly rolls off above the point of the shelve.

I thought I wouldn't be posting in this place again, but it would be nice if
you stopped making this misleading claim. Yes, the record goes out
to 30K. But it is SHELVED down above about 14K. Why? Stewart knows what
he is saying.