R/E/P Community

R/E/P => Klaus Heyne's Mic Lab => Topic started by: rmburrow on March 13, 2014, 01:09:28 am

Title: ELA M931 power supply schematic
Post by: rmburrow on March 13, 2014, 01:09:28 am
I recently acquired a Telefunken badged ELA M931 power supply.  It appears to be the old style L/C supply for AC701's.  Does anyone have a schematic for it?
Title: Re: ELA M931 power supply schematic
Post by: David Satz on March 15, 2014, 08:30:36 am
The ELA M 931 power supply was for the Telefunken-badged version of the Schoeps M 221-series microphones.
Title: Re: ELA M931 power supply schematic
Post by: rmburrow on May 17, 2014, 02:32:52 pm
David, Thank you for the schematic.  Good to have the paperwork.  I reset the power transformer primary for US voltage, the A & B voltages set with the mic under load; the mic works perfectly.