8mm Forum: barely no sound from super 8mm

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Topic: barely no sound from super 8mm

Gerald Richard
Junior
Posts: 3
From: Oshawa, ON, Canada
Registered: Oct 2014

posted October 04, 2014 12:54 PM

I have just purchased a copal cp402 sound projector,when playing movie barely any sound comes out, amplifier appears to be ok, I'm hew at this any help would be welcome
Gerald Richard

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Jim Schrader
Phenomenal Film Handler

Posts: 1628
From: Savage, MN, USA
Registered: Jun 2003

posted October 04, 2014 01:33 PM

without knowing much about these is it magnetic sound? if so check the heads if your hearing sound but not very loud the heads could be dirty gently clean with a swab and some isopropyl alcohol. Does the film seem to run fine through the machine otherwise? if its optical sound your sound head may need adjustment or simply try another film you know has good sound. Also if the unit has an external jack for a speaker try that instead of the built in speaker.

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jim schrader
"Let's see “do I have that title already?"

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted October 04, 2014 03:05 PM

Welcome Gerald...check out this thread. I had a similar problem with my Elmo ST800 and this fixed it.

http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=009425

Hope it helps you.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Gerald Richard
Junior
Posts: 3
From: Oshawa, ON, Canada
Registered: Oct 2014

posted October 04, 2014 03:06 PM

Hell Jim
that was quick, anyway I've tried the alcohal treatment, no go if you touch around the connections to the playback head you get a loud buzz, I have tried headphone from the external speaker jack and still no loud sound, very difficult to see if the heads could be out of adjustment and I don't have an owner's manual, the sound strip on 8mm are very small and don't know if there is adjustments for that
Gerald

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted October 04, 2014 04:59 PM

Gerald...Did you insert and remove the headphone jack repeatedly like Steve Klare suggested in the link I provided?

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Gerald Richard
Junior
Posts: 3
From: Oshawa, ON, Canada
Registered: Oct 2014

posted October 04, 2014 06:26 PM

Janice
yes I tried all your suggestions, I suspect the trouble could be on the amplifier board which is almost impossible to get at, the sound is barely audible, tried a small ajustment to the playback head, I would need a diagram of the electronics which seems almost to impossible to find
Gerald

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