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Has anyone heard of a MPX-4 from Dolby. I asume it's a mic multiplexr but I can't find any manuals or info on it. If anyone knows about it or used one, I'd like to know about it. I'm looking for a multiplexr for my Cp650.
I attached a Pic of it.
Thanks,
Chris
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I may have spoken too soon. The MPX-500 was the plexer for the CP500. Perhaps this was a precursor to be used with the Dolby recommended ABACUS analyzer.
Last edited by Steve Guttag; 01-03-2021, 01:18 PM.
The MPX-4 was created during the '80's for use by Dolby technicians tuning cinemas, in order to have a standard with Mic's and electronics. Hard to get thru the TSA of the day as the mics were clipped under the lid like little sticks of dynamite. Everything was powered by a little battery with screw on connectors.
The multiplexer for the CP500 is called AT-5. Nice unit but it didn't sell well as it was dedicated only to the 500 and the USL multiplexer was a less expensive option that would work with any cinema processor.
I found one on e-bay and have the same questions.
Any paperwork on these things?
It came with a battery adaptor, but no idea of voltage needed.
Nice unit, would be interesting if it actually works.
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