calculated Rk value is giving me slightly more distortion then distortion optimized Rk...
i.e.: if i place a 1k pot at Rk, i can get better distortion figures.
0.34% (calculated) vs 0.13% with pot
at 600 ohm load : 22dbu out
would this be due triodes are not perfectly matched ? or am i missing something.
(my fuses are dead on my DDMs, cant measure to confirm real life data - calculation formulas from tube cad journal)
Edit:
after double checking my calculations, i picked 1.2k Ra and 570r for Rk,
but 312r Rk is less distortion
6SN7 WCF with 310 VDC supply
edit2: changed topic from while to white
i.e.: if i place a 1k pot at Rk, i can get better distortion figures.
0.34% (calculated) vs 0.13% with pot
at 600 ohm load : 22dbu out
would this be due triodes are not perfectly matched ? or am i missing something.
(my fuses are dead on my DDMs, cant measure to confirm real life data - calculation formulas from tube cad journal)
Edit:
after double checking my calculations, i picked 1.2k Ra and 570r for Rk,
but 312r Rk is less distortion
6SN7 WCF with 310 VDC supply
edit2: changed topic from while to white