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Topic: Eliminating Hum in Eumig S 802
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Michael De Angelis
Phenomenal Film Handler
Posts: 1261
From: USA
Registered: Jul 2003
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posted June 07, 2011 10:50 PM
Steve,
The projectors were serviced a long time ago, and I never had anyone to look at them again. On the two separate occasions and different service techs.
About 18 yrs ago, I was given the lead of a gentleman who once worked at Eumig USA. in New Hyde Park. After Eumig, this man went into a home furnishing business with his spouse. I begged him for his service, and he was reluctant because he was out of the business, and he had limited time. I don't know if he replaced a transistorized components on the 822. The sound improved, but then it blew out again. Since then, the furnishing business has been closed.
About a year later, I was given another lead of a man in NYC. I think it was called Projector Workhouse. That man is out too, and the business is closed. He too fixed the treble control on the 810D. I brought the machine home, turned it on, ran about one minute of film, and the treble control blew out as it had on the 822. I'm guessing that it was a very sensitive transistor component. It was discouraging, and a waste of money.
A friend told me that he has a neighbor that works with electronics and the amps on these 700 and 800 series Eumigs are primitive and not very good.
-------------------- Isn't it great that we can all communicate about this great hobby that we love!
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Bill Brandenstein
Phenomenal Film Handler
Posts: 1632
From: California
Registered: Aug 2007
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posted June 08, 2011 06:51 PM
My 810D doesn't have a treble control... or does it? The front knob is sound-on-sound dubbing level, isn't it? The second from the front is volume, of course; with the internal speaker, it does tend to be rather bassy, but sounds OK if I run it out to another speaker.
Time to break out the manual. Which, by the way, contains a schematic if anyone here can read those.
Some very good information there, Steve. With all due respect to Paul, I think the graphic equalizer option is the lesser one because it does result in the loss of a great deal of bass. But most of us don't have access to a notch filter (or could build one like Steve). I did once borrow an analog parametric equalizer (now retired from studio use) and got rid of 60, 120, 180, and 240 with tiny notches. Connected downstream to a separate amp and speaker, the Eumig never sounded better. I was hoping to not ever have to consider going to that trouble again.
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