Update:
Fits great
I'm confident that I've got the pinout change correct, but I'm unsure of heater wiring. Looking at S.E.X. 2.1 vs. the 3.0 I'm having a difficult time understanding how to wire the heaters.
I think* that the 6DN7 should be connected as follows with the 3.0:
6FJ7 6DN7
Pin 1
-Heater Black- Pin 8Pin 2 -No-
Pin 3 -Grid Section 2- Pin 1
Pin 4 -No-
Pin 5 -Plate Section 2- Pin 2
Pin 6 -No-
Pin 7 -Cathode Sec. 2- Pin 3
Pin 8 -No-
Pin 9 -Cathode Sec. 1- Pin 6
Pin 10 -Grid Sec. 1- Pin 4
Pin 11 -Plate Sec. 1- Pin 5
Pin 12
-Heater Red- Pin 7Although, in each kit the heaters are wired differently. 2.1 same connections, 3.0 opposite.
2.1:
Red - Pin 8
Black - Pin 7
Both tubes.
3.0:
Red - Pin A12, B1
Black - Pin A1, B12
I see there is a 270 ohm resistor (terminals 1 and 15) that run to pin 12 on each channel, which is why red/black heater connections need to be opposite correct?
Could I please ask for advice on connections with the 6DN7? I would absolutely greatly appreciate the input from anyone and everyone. I would try it out, but I'm unsure if making a heater wiring error would result in very bad things.
I'm also curious if I can implement the 220ohm carbon film resistor by attaching close on pin 4, and an isolated terminal post (so it does not make ground contact), and attach the orange and white striped wire from the bottom center terminal of the attenuator to that post as well. This would mimick what was pin 8 on the 6FJ7.
Thank you!
-T
