Mike Casey wil be giving an updated presentation on his "Field Audio
Collection Evaluation Test" at this month's Music Library Association
workshop. In repsonse to a draft he sent me, I quote the following about
commercial LPs, which seems germaine to this discussion:
Plastcisers are evaporating from early LPs. Chemicals are being altered
with time, now 60+ years. At some point (1953?) the “standard” vinyl mix
changed for the better. Even so, I’ve seen surface splotching with the
expected audio results- crunching each revolution, etc. There seems no cure
In addition many of the plastic inner sleeves have stuck to the record.
Orange-type cleaner and much patience can reduce the problems but not
eliminate them. This is one source of residue on the stylus.
It should be borne in mind that, as the 45/45 stereo groove cycled in, many
mono records were recut to the half mil groove with the same info on each
groove wall and used the RIAA curve. Earlier ones are lateral cut, use a
one mil groove and a wide assortment of curves.
----- Original Message -----
From: "Mike Richter" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, February 12, 2006 11:20 AM
Subject: Re: [ARSCLIST] De-static question
> Lou Judson wrote:
>> Brrrrr! All this talk of weisghting the stylus for Lps just makes me
>> cringe! For 78s maybe okay but on microgroove and stereo Lps isn't that
>> damaging? I know it is. Diskwasher 3, now 4, is all I use, other than a
>> wash with Ivory when they need it! The moistening just before playing
>> takes the static away...
> The only occasions on which I've weighted the cartridge for LPs are when
> warp causes mistracking. Even then, only a slight increase - a gram or two
> at most - makes sense because with more the stylus tends to bottom out.
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