The Amp Garage

Okey dokey, I knew someone would know...

Your are welcome Doug!
The relay boards you have done, are wunnerful!

Here is a Mark Huss drawing of a 1987 circuit with the pentode/triode switch.

I guess I ignored that switch... It looks like a pentode/triode switch, but it is missing some resistors to not hammer the screens. I'm sure someone will chime in. The half power switches I have seen basically, nearly ground the cathodes with a couple of resistors and an LED to the inside tubes of a...

There is no way I would wire up the AC power, switch and fuse like that drawing. The common and hot are crossing at the power switch....wow. You should not fuse the common, you fuse the hot (black). Look at the D-lite with relays drawing I'm including. Better power layout, with a complete disconnect...

Regulator onboard is good

I believe one of the moderators needs to follow the warning link, to pull the warnings off of TAG.

Looks interesting

I never could stand liver... and Portnoy fed that to his Dad, with the special sauce.... ewwww!

10 volts unrectified is not that much off.
Use either one.

You are very welcome

Look in the Dumble Files section for schemos. There is a mass quantity of things in there. Tony has done a marvelous job on layouts and schemos, with help from some of the other guys on here. There are numerous great folks on here, that have helped us all get a grip on these amps. Cannot say enough....

This is the layout I built from. No Fet, no HRM. Put the OD trim on back with a pot. It is marked for a more D like setting, but run it hotter. Exceptions to the layout as well, put ceramic caps across the diode bridge, tweaked the tail resistor to get voltages better on the loop. No R/J switch. Lef...

I take it that you have built other amps... Most of the D style amps are not too difficult to build with some building experience. There are gobs of schematics, and layouts in the Files section to choose from. Your budget is the dominating factor on what to build. Tone you like could be any of the n...

oops, mine was a Marshall...