Search found 3 matches
- Fri Jan 25, 2019 11:10 am
- Forum: Marshall Discussion
- Topic: Dual bias adjustment and effects on grid leak/PI load?
- Replies: 3
- Views: 1115
Dual bias adjustment and effects on grid leak/PI load?
Hi I have just finished building a Superlead clone where I have used the dual bias supply circuit explained here: https://robrobinette.com/Generic_Tube_Amp_Mods.htm#Adjustable_Balanced_Bias I have just learned that the value of the bias splitter resistors (the 220k in a Marshall with EL34s) affects ...
- Tue Dec 04, 2018 12:01 pm
- Forum: Technical Discussion
- Topic: Elevaterd heaters and Marshall 6v pilot light
- Replies: 3
- Views: 583
Re: Elevaterd heaters and Marshall 6v pilot light
I know that some LEDs have built-in resitors but how do I know if this one has it before risking to fry it?
- Mon Dec 03, 2018 11:12 pm
- Forum: Technical Discussion
- Topic: Elevaterd heaters and Marshall 6v pilot light
- Replies: 3
- Views: 583
Elevaterd heaters and Marshall 6v pilot light
Hi Everyone! first post here, I hope it's the right section. I am preparing to build a 12000 series plexi replica where I will be using elevated heaters. As a pilot light I am using this one: https://modulusamplification.com/Marshall-Original-Red-Square-light-Panel-Mount-6v-P5303849.aspx Looks like ...