[78-L] Record Noises - Identify and Understand Cause

[Ron L'Herault]

If you are talking about hiss and noise on 78s, part of that can be from the
use of (a) worn steel needle(s). Especially on early acoustical and electric
era records, the grit in the record is supposed to shape the needle to the
groove, which actually prevents excessive wear.  A needle left for more than
a play or two, or even worse one removed and replaced (the old wear will not
line up with the new groove) accelerates wear and causes more noise in the
beginning of the record until the needle shapes to the groove.  If the
needle is really worn, it gets shoulders that ride on top of the groove
which REALLY wears the record badly.   As pick ups became lighter, shaping
to the groove was no longer desirable or necessary.  Record formulations
became more and more grit free (hopefully).   

Ron L 

-----Original Message-----
From: 78-l-bounces at klickitat.78online.com
[mailto:78-l-bounces at klickitat.78online.com] On Behalf Of Koen Kamphuijs &
Gusta Harderwijk
Sent: Wednesday, January 15, 2014 3:56 PM
To: 78-L Mail List
Subject: Re: [78-L] Record Noises - Identify and Understand Cause

All,

I read this thread with great interest.

I have the impression the hiss and noise is loudest in the beginning and
gets less noisy towards the center of the record.  Is it just me or is that
your idea too?  I was talking about it to a friend of mine, a vinyl fanatic
and we thought it could be the difference in lateral speed (is that the
right word? the speed the groove goes under the needle) that is much faster
on the outside compared to the inside.

Granted, I'm not an expert on this, just curious.

Koen Kamphuijs

The Legends of the Rocking Dutchman - a weekly radio show of Rhythm & Blues
of the thirties to fifties.
http://www.koenkamphuijs.nl/radio

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