Hi there, new DIY guy here. I was hoping to change out the output transformer in my ST69 with a Lundahl. I've done the switches with ribbon mics no problem, and make the assumption switching the output would be fairly easy. Needless to say, I have learned my lesson.
I grabbed a Lundahl LL1940 (it being the "Lundahl Tube Transformer"). I've tried following the pinout guide given by Lundahl, but to no avail. Any help would be appreciated. Just trying to learn here.
I grabbed a Lundahl LL1940 (it being the "Lundahl Tube Transformer"). I've tried following the pinout guide given by Lundahl, but to no avail. Any help would be appreciated. Just trying to learn here.
Have a read of-
Modding the Sterling ST69 - Gearslutz
AB LARS LUNDAHL - 1940.pdf
Connections are shown in the schematic --IE- 4 to anode (plate ) via isolating capacitor .
1&3 -earth .
9&10 --out ( with 6&7 paralleled ).
Modding the Sterling ST69 - Gearslutz
AB LARS LUNDAHL - 1940.pdf
Connections are shown in the schematic --IE- 4 to anode (plate ) via isolating capacitor .
1&3 -earth .
9&10 --out ( with 6&7 paralleled ).
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