Author
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Topic: Optical Sound Question /w/ Elmo ST1200 Series machine
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Chip Gelmini
Phenomenal Film Handler
Posts: 1733
From: Brooksville, FL
Registered: Jun 2003
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posted October 14, 2005 12:09 PM
I am curious if faded optical sound prints might have impact on threading via autoload. I've adjusted head pressure with the tension spring behind the optical bulb. The sound when it plays, goes between good sound with nice treble, to bad wobble sound with low treble.
Upon examining in play mode, there's quite some slack around the optical assembly as the film runs.
This has nothing to do with my Towers, as I have checked these machines with the machine arms holding the reels.
As it happened recently, I simply used my finger and pulled down the bottom loop to make it bigger by one or two sprockets. and this seemed to have quite a better difference.
This problem has been noted on both machines I use, therefore, I suspect print quality being the issue.
It is also noted that magnetic sound film autoloads and plays just fine. These machines do have a mechanical difference between mag and optical sound, that being in optical mode the mag head pressure is reduced.
Any information is greatly appreciated to this. While I use the 1200HD units, those who run optical with the GS1200 might want to pay attention to this as well. Let's see if there's a connection.
In the next few days I'll run one of my better color optical prints. And maybe that will help me figure this out.
CG
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