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Old 8th January 2012, 05:20 AM   #11
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Join Date: Mar 2007
Location: Auckland, NZ
just about to - thanks P10 and Mach1 for the math... Have all the bits and the family is away, weather is crap so onward...
"It may not be easy for some to not hear differences, even if they are not there." - Vacuphile,
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Old 8th January 2012, 08:44 AM   #12
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Join Date: Nov 2006
Location: Munich, Bavaria
My first amplifier used E/PCL86. With proper OPTs it performs really well. Schematic was pretty standard but modified along the way numerous times. I think it is fixed bias now and has cathode + direct anode feedback or so. The correct value for the OPT is 7k for the 250V-36mA operating Point, not 5k !! I used Reinhöfer (Röhrentechnik.de) 53:00 type for this.
I hardly use the amp now because 4W is a not much Power. It's standing near my workbench in the cellar now and plays a little music/radio when I solder. EMM801 is switched off. It turns you crazy when you see this flickering from the corner of the eye
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Терпенье и труд все перетрут
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Old 15th October 2012, 07:49 AM   #13
romicap is offline romicap  Romania
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yes, i`am built one!
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