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Urei 21 schematic
« on: January 10, 2017, 01:06:09 PM »
A friend of mine has an Urei 21 mic preamp, that he uses to trace speakers response.

It started  working weirdly, and the problem seems to be on the preamp.

No luck in finding it yet. Any suggestions?


abbey road d enfer

Re: Urei 21 schematic
« Reply #1 on: January 10, 2017, 04:37:57 PM »
Are you sure of the reference? Never heard of type 21. Is it solid-state or valve? Stand-alone or cassette? A pic would help.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
"The important thing is not to convince, but to give pause for thought." (B. Werber)
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pucho812

Re: Urei 21 schematic
« Reply #2 on: January 10, 2017, 05:26:44 PM »
you can find just about every urea schematic here
http://www.jblproservice.com/navigation/Vintage%20JBL-UREI%20Electronics.html

just hover the correct model number. I have never heard of a urea 21
Every mic has a purpose it might be a door stop or a hammer, but every mic has a purpose.