The Amp Garage

thank you for the datasheet and the circuit, and thanks to all who have answered! I‘ll post here when I start this build. Until then I‘m finishing my current project, a Marshall 2022 preamp/tonestack followed by an EL84 Triode Push Pull powerstage. I have never seen that combination and am curious h...

Tobyk, that‘s what makes me think… when just replacing the selenium rectifier with a silicon one, and not adjusting the bias resistors (15k, 56k) you‘ll get a higher bias voltage. In order to know how to lay out the bias winding in the transformer you need to know the forward voltage…. But, that is ...

thank you! first time I see the currents in the different paths. :D It seems to be very difficult to get any information about the selenium rectifier, those had a very high forward voltage that influences the voltage of the bias winding… not so critical because the resistors can be choosen according...

I have access to professional equipment, and advice from a guy who makes his living from building transformers and chokes. Complicated pieces I buy from a local company that produces individual transformers according to specification. At home I have also a winding maschine for Pickups and other smal...

Hello, I am new here in the forum and first would like to introduce myself briefly. I live in Germany near Nuremberg and work in engineering for a large American electronics company, registered to get more detailed data of american made Amps than those that can be found on the web only, am especiall...