chongmagic
Well-known member
I found some NOS NKT275s to put in and they sound pretty good. I will have to put up a sound demo when I can.
Sunflower Fuzz
- Thread starter chongmagic
- Start date
Jbanks
Active member
I built a Sunflower a month or so ago and couldn’t get the level/gain to be high enough. Messed up the PCB taking out a transistor and started all over last night...
Long story short, the sound issue is still the same-bypass is fine, when turned on it is very quiet and no fuzz. No luck turning the clean and bias.
I can’t locate NKT275 germanium and tried silicon and another matched pair or Ge that didn’t work. Will this not work even close without the NKT275’s? I build a fair amount of pedals a month and something this simple is really puzzling me.
Any help would be welcome!
Long story short, the sound issue is still the same-bypass is fine, when turned on it is very quiet and no fuzz. No luck turning the clean and bias.
I can’t locate NKT275 germanium and tried silicon and another matched pair or Ge that didn’t work. Will this not work even close without the NKT275’s? I build a fair amount of pedals a month and something this simple is really puzzling me.
Any help would be welcome!
chongmagic
Well-known member
You don't need NKT-275s they are near impossible to find and most are duds or fake. You can use some 2SB171s those should work too.
Jbanks
Active member
chongmagic
Well-known member
You can probably get a matched pair off Smallbear
chongmagic
Well-known member
The range depends on the type of tranny you use. 2SB171 from specs have 50 minimum hfe. So 50 and over is what you would want. Small bear will sell a matched pair with the correct hfe.
chongmagic
Well-known member
They match Q1 and Q2 so that they are the optimal values. From what I recall Q1 is always lower in hfe than Q2.
