The Amp Garage

Here's complete schematic

Thanks Martin and Erwin

The only thing it shares with the bias is a secondary ground it has more than enough current capacity to drive a few 150ma relays 20volts can be run through a 7812+ volt regulator as it can take up to +35vdc . Basically its still an extra supply winding independent of the bias winding however too mu...

Thank you Erwin appreciate it . Any does any value come to mind maybe 3.7k or 4.7k at 5watts to start?

Here is the Dumble 102 power section do you feel changing Resistor 2.7k after Choke ?

BTW this beautiful transformer also has separate 20vac secondary windings that came stock to power some relays . It's the perfect transformer in every way I am just trying to drop main B+ abit here is an enclosed 102 power supply section trying to calculate the proper voltage drop and use a heavy en...

This crate also has a nice 60 volt separate bias supply winding

Yes I am new on here I spoke to the Admin and we got that all straightened out my apologies for acclimating myself on here . I am looking for the best solution and sometimes it comes from many minds not just one .Thanks for your time

This is not a Peavey it's a Crate and it's about 45 volts higher vac unrectified directly on the secondaries. And this measurement is no load and a typical Dumble 50 watt transformer is between 345 and 355 on the unrectified secondaries no load VAC

Have a 102 I am building I also have a beefy old Crate Turbo valve 60 power transformer I intend on using its no load unrectified is 398 vac on the secondaries. I know the Dumble likes to see about 345-355 vac range can I use this without pushing the limits of the values and components in the power ...

Have a 102 I am building I also have a beefy old Crate Turbo valve 60 power transformer I intend on using its no load unrectified is 398 vac on the secondaries. I know the Dumble likes to see about 345-355 vac range can I use this without pushing the limits of the values and components in the power ...

When I have crackling problems I usually substitute even the preamp tubes as well as power tubes . The output transformer I usually would condemn for last . Check all solder joints and connections throughout the signal chain even tube sockets clean them with deox spray clean up all the pins on the t...

Understand thanks

This particular amplifier was rated at 60 watts pushing either a pair of 6L6s or optional EL34s