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Magnetic sound on 16mm projector


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#21 Mark Dunn

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Posted 25 November 2017 - 08:29 AM

Sorry, you've reached the limits of my knowledge, at least for something that's not in front of me.

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#22 Luigi Castellitto

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Posted 25 November 2017 - 04:28 PM

We got a lot from this projector, which I paid only 30 euros! On ebay, it sell also at 150 euro, or new at 380 euro at Leica official shop. I thank you for the help, you made me clear on some points.
 
Today I did another test: I realized that with the movement of my fingers for put on gold base the detached head I move the screws with blue paint, the screws for alignment. So, at this point, I tried to put hand on them, and to unscrew or twist alignment zone (also on delete head). It changes very little, the volume rises and lowers, or the sound becomes more "muffle" or not, but for rec nothing to do, the magnetic head on rec mode it remains mute, and insensitive to the magnetic screwdriver approached.
 
We will see for intervention on the circuitry.

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#23 Luigi Castellitto

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Posted 21 December 2017 - 10:15 PM

Boys, a question:

In 16mm projectors film enter in the projector with the emulsion side on the opposite side compared to the lamp. So, with side with optical or magnetic sound AGAIST the lamp. Ok.

 

Therefore, AGAIST the magnetic sound heads and AGAIST the optical lamp there are emulsion side... SO, not side with two type of audio.

 

How do projector read both type of audio, if it's recorded on the opposite side of the film? 

therefore

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#24 Mark Dunn

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Posted 22 December 2017 - 04:32 AM

The mag stripe goes on the same side as the optical track, opposite the sprockets, so you can't have both on the same print. Is that what you mean?
(In fact, a print from neg has the emulsion away from the lamp. The base side faces the lens, and the stripe goes on this side- it is glued on, and wouldn't stick to the emulsion side. Look at any print on a spool- it's emulsion in. A roll of original camera negative is emulsion out.

Edited by Mark Dunn, 22 December 2017 - 04:38 AM.

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#25 Luigi Castellitto

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Posted 22 December 2017 - 08:40 PM

Yes, Mark, I wanted to say this.

And instead, when the film passes in front of the optical reading point, in what direction is it? Emulsion or base faces to exciter lamp?

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#26 Mark Dunn

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Posted 23 December 2017 - 04:10 AM

The base side faces the lamp, if it's a contact print.
Incidentally, last month I ran an Australian b/w telerecording. As it was a reversal original, it ran emulsion side to lamp.

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#27 Luigi Castellitto

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Posted 23 December 2017 - 08:06 PM

Thanks, Mark!


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