Bootleg OD

Jiuk

Active member
Does it look similar?

Choose high hfe(280-290) 2n3904 TR. Low hfe(190-211) TR makes poor sound.
 

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cooder

Well-known member
Nice! So are you saying you had initially a low gain 2N3904 in there and it sounded poor and then you swapped it for one that tested higher gain?
 

Ratimus

Active member
Weird; both transistors in that circuit are wired as emitter followers so their individual gains should both be just barely less than one. Maybe you just had some devices from a shoddy batch, indicated by the low hfe. Did you get them all at the same place and sort them? Do they all look identical? Seems odd.
 
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