Guitar Amp Power Transformer Wiring Diagram

The 12l8gt is an octal base twin pentode designed for low power output audio use.

Guitar amp power transformer wiring diagram. Please visit my tube amplifier forum here s the place you can go to ask tube amplifier questions. Diagrams are available at the triode usa site for transformers with 120 240vac primaries and four primary leads which must be. My pt shows differently than. Circuit the 12l8gt output tube.

I ve been starting a build on a 50 watt marshall plexi style amp and i want to make sure i wire the power transformer correctly. Common electric guitar wiring diagrams note. The 2w tube guitar amp schematic is also available as a pdf file with bill of material bom. I am a guitar builder who wants to know a lot more about the entire instrument from the guitar through the amp.

The tube amp library of information click the link above for tube amp info schematics board building information projects mods transformer diagrams photo s sound clips. Each wiring diagram is shown with a treble bleed modification a 220kω resistor in parallel with a 470pf cap added to the volume pots. There are hundreds of pages of tube amp information on my library page. This will be my third amp build the first two were warm ups an altoids amp and a noisy cricket both fun as i get my feet wet.

A word about the chosen output tube may be in order. Ok on to the questions. I m under the impression that i need to use red red yellow red or orange red yellow orange red yellow being centertap for either one i use depending on whether i want to use 690v or 625v.