[78-L] early days of KPRC

[david.diehl at hensteeth.com]

 >I don't even know if it's a legitimate term, but I apply it to any vinyl pressings that are off-round and impossible to center. Sometimes one side is fine and the other side seems to have two "high" sides, so I don't think the problem is uneven cooling or too-quick removal from the press.dl

Playtex syndrome? Stampers don't stretch but vinyl does. Operators use two hands to pull platters out of the press. When the production cycle is accelerated there is inadequate time to cool the discs uniformly, some areas of the platter are fine- others not so good.
DJD- worked his way through college in a plastics factory.

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-----Original Message-----
From: David Lennick [mailto:dlennick at sympatico.ca]
Sent: Friday, February 17, 2012 06:40 PM
To: '78-L Mail List'
Subject: Re: [78-L] early days of KPRC

I don't even know if it's a legitimate term, but I apply it to any vinyl pressings that are off-round and impossible to center. Sometimes one side is fine and the other side seems to have two "high" sides, so I don't think the problem is uneven cooling or too-quick removal from the press.dlOn 2/17/2012 7:30 PM, neechevoneeznayou at gmail.com wrote:> Please define stamper stretch. This is a term I have not encountered> previously.>> joe salerno>>> On 2/16/2012 3:57 PM, David Lennick wrote:>> A lot of early Columbia lps were just rushed onto the market, and most of them>> had been dubbed direct from 33RPM lacquer originals without a tape master. The>> EQ is all over the road and many discs suffer from stamper stretch or noisy end>> grooves. Victor didn't produce an lp till 1950 although the low numbered discs>> all have D9 matrix numbers, so at least they were working on having a library>> when they finally started issuing lps. Some early Londons are absolute horrors.>>>> dl>>>> On 2/16/2012 4:17 PM, Robert M. Bratcher Jr. wrote:>>> Rotten? I'm sure it's because they were dubbed from 33 or78 rpm masters. Either from laquer discs or a stamper or something else in the record manufacuring process. My experience with early LP's seems to be from Columbia& RCA Once you get the EQ right they don't sound too bad.....>>>>>>>>>>>>> ________________________________>>>> From: David Lennick>>>> To: 78-L Mail List<78-l at klickitat.78online.com>>>>> Sent: Thursday, February 16, 2012 2:45 PM>>>> Subject: Re: [78-L] early days of KPRC>>>>>>>> Well, at least pre-1948. I don't know how quickly radio stations began to adapt>>>> to play lps. Convenience aside, the quality was pretty rotten on many of the>>>> early ones.>>>>>>>> dl>>>>>>>> On 2/16/2012 3:38 PM, Mark D Mobile wrote:>>>>> Those are RCA turntables and the arm has a 3-mil cartridge, which makes it>>>>> pre-1947 or so...unless all they used the 'tables for was to play 3-mil-cut>>>>> commercials.>>>>>>>>>> Mark Durenberger>>>>>>> _______________________________________________>>> 78-L mailing list>>> 78-L at klickitat.78online.com>>> http://klickitat.78online.com/mailman/listinfo/78-l>>>>>>>>>> _______________________________________________>> 78-L mailing list>> 78-L at klickitat.78online.com>> http://klickitat.78online.com/mailman/listinfo/78-l>>>_______________________________________________78-L mailing list78-L at klickitat.78online.comhttp://klickitat.78online.com/mailman/listinfo/78-l