8mm Forum: Amp tube question

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Topic: Amp tube question

Barry Fritz
Phenomenal Film Handler

Posts: 1061
From: Burnsville, MN, USA
Registered: Dec 2009

posted January 27, 2011 10:43 PM

I have a volume problem on my Ampro Stylist. Service manual says 50C5 tubes may be problem or condenser filter. I thought I would try replacing the tubes. Are all 50C5 tubes the same, or are there varying specs for them? I have zippo experience with amplifiers and have heard that you can get zapped even with power disconnected. What precautions can I take to avoid that? Thanks

[ January 28, 2011, 08:49 AM: Message edited by: Barry Fritz ]

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Lee Mannering
Film God

Posts: 3216
From: The Projection Box
Registered: Nov 2006

posted January 28, 2011 09:51 AM

Hi Barry
As far as I know there is only one type of 50C5 Beam Tetrode which was used a great deal in the 60's. You can find them in all sorts of things, radios, guitar amps and the like as well.
Hope this is a little help.

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Barry Fritz
Phenomenal Film Handler

Posts: 1061
From: Burnsville, MN, USA
Registered: Dec 2009

posted February 02, 2011 11:56 AM

Thanks Dave: I jumped over to 16mmfilmtalk Forum and got a ton of information on the subject. You are correct about the tube. There are alot of amp techs on that forum and would recommend it for anyone with 16mm issues.

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