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ARSCLIST  June 2003

ARSCLIST June 2003

Subject:

Re: Early English Columbia LPs

From:

Mike Richter <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Tue, 10 Jun 2003 09:18:42 -0700

Content-Type:

text/plain

Parts/Attachments:

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text/plain (27 lines)

At 11:02 AM 6/10/2003 -0400, James L Wolf wrote:
>Steve,
>
>     Can a cartridge wired this way produce a stereo signal reflecting
>right and left groove walls? Or does any stereo cartridge rely on
>vertical movement? Thanks.

No, a stylus wired to sum left and right channels as recommended will
provide only a monaural signal. (That remains true even if both channels
are driven.) It is a quick and easy solution to reducing vertical rumble
and related faults but works as intended only if the two channels are
perfectly balanced. In the real world with unbalanced channels, the result
is as though a monaural cartridge is slightly skewed in its mounting.

All stereo cartridges rely on vertical and horizontal displacement to get
the separate channels.

Note that an important advantage of the suggested wiring is that vertical
rumble is greatly reduced. That can be important given that there is a lot
of subsonic signal on a typical monaural LP (to say nothing of a 78) and
that some preamps will not take kindly to it.


Mike
[log in to unmask]
http://www.mrichter.com/

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