My 12xxx Done - Pics! - Soundclips

[Roe]

Walter,

Did you see this picture? To me it looks like the roumor is confirmed that the new gain stage is right before V2. Like you say. But it is not a 2203 spec (according to what I can see). I think it is a cascaded 1959, because you see the cathode caps for both standard v1a and v1b are in there still.

Then it looks like he is going from this through a 470K/500pf 470K voltage devider. through a 0.022 to someting to the new stage or what do you think?

///G

here's an attempt to identify some key values:
v1b k: 10k with switchable electrolytic cap
v2a k: 10k? with switchable electrolytic cap
v2b k: original 2k7 resistor appears to been replaced by cap with a higher value. original .68uf cap

[wdelaney72]

Unfortunately, I can't confirm or deny anything from that picture. You can clearly see, though, that the wire going into v2 (now the third tube) is not stock. I also can't tell if the wire coming out of the treble pot is gioing to the stock voltage divier or somewhere else.

My ears still tell me it's based on 2203 with added stage.