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Topic: Ballantyne Royal Sound Master PD 50-A

John Schulien
Expert Film Handler

Posts: 206
From: Chicago, IL, USA
Registered: Nov 1999

posted 01-16-2003 10:59 PM

The next task in my projector restoration project is the restoration of a Ballantyne Royal Sound Master model PD 50-A amplifier.
The manual is here:

http://www.film-tech.com/manuals/SOUNDMASTERPD50.pdf

I just completed the delightful task of cleaning all of the mouse droppings out of the chassis. [bs]

I know to bring the voltage up slowly using a variac in order to reform the old capacitors.

I have a question about the RSM-91 cable, which connects the amplifier to the photoelectric cell. Does anyone know the connector type/part number of the screw-on chassis connector and/or a source for the part?

Thanks, John

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