There is no "one size fits all" when it comes to playing back any type
of disc, including opposite sides of the same disc. It all depends on
the type and condition of the source.
Sounscriber discs are somewhat unique in that the grooves were embossed
as opposed to being cut so most often you don't have the same choices
when it comes to playing above or below the wear. The groove width is
about 3 Mils however, the embossed groove is much shallower than
conventional discs and is "U" shaped as opposed to the "V" shape of
traditionally cut discs so typically you wind up with a narrower stylus
to keep groove contact.
That said, start with a stylus of about 3 Mils and work your way into a
narrower stylus from there. It will come down to using the widest stylus
that will track the groove. Wider styli will produce better
signal-to-noise than narrower styli. The fidelity will be poor no matter
what: About that of a 1950's analog telephone.
Keeping the stylus in that embossed groove is the holy grail here so
make a spindle adapter for the square center hole (if needed) and make
it as accurately as possible to keep the disc centered which will help
with tracking. Sometimes playing the disc at 16-2/3RPM and doing the
pitch correction after the fact is the best answer. These discs are very
thin and sometimes with this type of disc I have used some distilled
water between the disc and the turntable (the catalyst affect) to keep
it as flat as possible.
Hope this helps,
Corey Bailey Audio Engineering
On 8/26/2016 7:28 AM, Erik Dix wrote:
> I am trying to find out what size of stylus would work best with the
> playback of green soundscriber discs.
> Any help is greatly appreciated,
> Erik Dix
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