ROBERTLATHAM1 Posted January 19, 2006 Report Share Posted January 19, 2006 as you all well know i have been playing with this 6L6 monster lol! i took the voltage reading on pin 3 of the 6l6 (409v) i then measured the voltage across the cathode resistor(30.8v) which has no bypass cap (would adding say a 25uf cap here improve the bottom end?) anyways the cathode resistor=195ohms. now that the stage is set. i then began my calculations. i took the 30.8v cathode voltage and divided it by the 195ohms cathode resistance and came up with .154amps or 154ma. i then multiplyed this by the 409v plate voltage and came up with 62.986w disapation. now this is a combined load of both output tubes as they are both useing the same cathode resistor. so i then divided the wattage by 2 and came up with 31.493w per tube. does this sound like the bias is a little hot for 6l6 and would acount for quicker break-up and lower headroom? or even still have i completely fouled the whole bias calc process up? Quote Link to comment Share on other sites More sharing options...
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