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Re: km56 vs. PS Telefunken Ela M 931
Author: Klaus Heyne
Date: 09/03/2013
ELA M931 schematic sent.

But do not use the mic with a 4.7VDC heater voltage. If the tube is not already stressed enough, you are helping it getting there, especially if you measured such high voltage directly at the tube.  
 
Reply
Rafael Abal
08/23/2013
Klaus Heyne
08/24/2013
Rafael Abal
08/24/2013
Rafael Abal
09/03/2013
Rafael Abal
09/03/2013
Klaus Heyne
09/03/2013
Rafael Abal
09/04/2013
Klaus Heyne
09/04/2013
Rafael Abal
09/04/2013