I've seen palmitic acid deposits, which were subsequently cleaned off,
cause this type of "cyclical" noise. If the deposits are left on the
record surface long enough, the acid can cause pitting in the groove walls,
which leads to permanent groove damage. To the naked eye, the record looks
clean.
Ellis
On Wed, May 22, 2013 at 11:44 AM, John Haley <[log in to unmask]> wrote:
> Hi, Ben,
>
> Not sure which records you are referring to, as the posts have been about
> (1) the noisy Queen 78 records (Gospel Trumpeters) and (2) warped records.
> If your records are only noisy in one radius area (6 o'clock), that
> suggests to me that they were once warped but got straightened out (which
> can happen on its own if they have been stacked horizontally for a while).
> Or maybe the record was stored in such a way that only this area was
> exposed and collected a lot of dirt (a ripped paper sleeve?). If it's the
> latter situation, a good washing with warm water should help (try to keep
> the label dry). Otherwise, something else could have got on the record
> just in that area. If warm water won't clean it off, it will be hard to
> clean it without killing the record . Recurring swishing noise as the
> record rotates is not much fun to work on, on the computer, if automatic
> click and pop removal won't fix it.
>
> Best, John
>
>
> On Wed, May 22, 2013 at 11:02 AM, James Roth <[log in to unmask]> wrote:
>
> > Hi John,
> >
> > Thanks for the email.
> > What seems strange to me is the sound is only terrible on half the
> record.
> > If we use a clock as an analogy, just before and after 12 O'clock sounds
> > clean, but just before and after 6 O'clock sounds terrible.
> > The records are not warped.
> >
> > Ben Roth
> >
> > -----Original Message-----
> > From: Association for Recorded Sound Discussion List [mailto:
> > [log in to unmask]] On Behalf Of John Haley
> > Sent: Wednesday, May 22, 2013 10:49 AM
> > To: [log in to unmask]
> > Subject: Re: [ARSCLIST] Noisy Queen 78s
> >
> > Did you try any smaller styluses? "Normal" is about 2.75 - 3.0, and you
> > were not that much below that with 2.5. You can get them as small as 1.5
> > and 2. It's all trial and error. Assuming that the records were not
> just
> > made that way (noisy), you are trying to find a portion of the groove
> walls
> > to play that is less worn. So it all depends what they were played with,
> > that made them worn.
> >
>
--
Ellis
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