The Amp Garage

http://www.bmamps.com/Tech_tds.html you do realize that site is for push pull not single ended amps. There is a box where you can select either single ended resistive load, single ended transformer load, or push pull transformer load. Am I confused about what it means by single ended transformer lo...

... what I don't understand is how to choose the starting variable. I understand how to take a given power transformer and determine what the B+ should be and from there what primary impedance I need for the tube type, or what B+ I need for a given output transformer and tube type, but in this case...

...choosing a high vs low voltage is still a bit of a mystery to me... The most limiting factor in the equation of variables you potentially have at your disposal is going to be the reflected load of the OT that you obtain (as this is a pre-determined thing - unless you can wind your own output tra...

Tubeswell and RJ, thanks for the schematics! I've been having trouble finding single ended EL34 schematics to study, I'd only found one so far actually, and having two more is a huge help! RJ, what is the plate voltage on your schematic, based on the PT specs, I'm assuming its somewhere in the 375v ...

I would go for more Around 300 volts on the plate and rework the power supply to a parallel configuration so you can still have you preamp tubes at a higher voltage. The added plus of this will be you can do what didt posted . Why would you go with 300v on the plate? I'm curious because choosing B+...

Welcome, Nick! Looks like all but the bright cap over the Master pot on a Clubman preamp... I say go for it. Report back please. What's up with the 18k plate resistor on V1? Would be 36k if the triodes were split... Seems way too small. It must work though. You could also try fixed bias on the powe...

This is my first post here, I've built four amps so far, starting with a 5e3 kit and moving slowly in a more independent direction, also repaired a couple of vintage craigslist finds. I usually post under the same name over on TDPRI, but as I move more away from Fender based builds I notice I get fe...