Re: arsclist Stereo or Mono Transfers of Mono Discs?

["Doug Pomeroy" <pomeroyaudio@xxxxxxx>]

Assuming the possibility that restoration procedures might be undertaken 
at some future point in time, a stereo transfer is to be preferred, as this
provides more information about the two groove walls than mono does.
However, attention must be paid to the sum of the left and right channels,
since rejection of spurious vertical modulation, including turntable rumble,
is ideally achieved in such a mono mix. It is essential that the left and
right cartridge outputs be EXACTLY equal to optimize the mono mix.

(Yes, I know, the mix will change slightly as the record plays, since a
tangent-type arm is perfectly tangent to the grooves at only two places
on the disc surface. But, the mix should be optimized insofar as possible,
and the easiest way to do this is to use your ears and an adjustable
sum-and-difference matrix. This is not rocket science.)

Inotherwords, make the transfers in "stereo", but balance the channels
in your monitors for the most perfect mono possible; thus if the channels
are combined at some future time, for whatever reason, the mono will be
as good as it can be.

--
Doug Pomeroy   pomeroyaudio@xxxxxxx
Audio Restoration [CEDAR] & Remastering

<The trouble with getting it right the first time
is that nobody appreciates how hard it was>

----------
>From: Tom <tom@xxxxxxxxxxxx>
>To: ARSCLIST@xxxxxxxxxxxxxxxx
>Subject: arsclist Stereo or Mono Transfers of Mono Discs?
>Date: Fri, Jun 22, 2001, 5:29 PM
>

> When making arhival copies of 78s and mono 45s and LPs, should one make
> stereo or mono copies.
>
> ----------------------------------------
> Tom Diamant
> Arhoolie Records
> 10341 San Pablo Ave.
> El Cerrito, CA 94530
> USA
>
> phone: 510-525-7471
> fax: 510-525-1204
> email: tom@xxxxxxxxxxxx
> web site: http://www.arhoolie.com