Congrats!...Since yesterday I have the 6101 / Black One / EL34 / G12 Gold …. WONDERFUL
...
In few days I’ll receive the 1x12 6912 Closed Back in 200 watts
Can’t wait.
Cosmetically nice 6912s are rare birds, as those are 30 years old.Where did you find the 6912? I'm looking for a blue one.
Reverb, from Germany > 570€ / 624$Hello. Welcome!
Where did you find the 6912? I'm looking for a blue one.
Roger
And makes an awesome little mini stack.Congrats!
Spoiler alert:
If you like the 6101 now, you'll love it with the 6912.
The little extension cab really blew my mind when I got mine.
The combination sounds incredibly huge.View attachment 144136
You can't spam a 6100 thread with a pic of a 6100! All 6100's matter.Sorry, don’t want to spam this thread with pics but damn this amp such a nice piece of Marshall history…
View attachment 145666
Yes if the zener is in there running 5881's it will clamp the max bias voltage at -51v. 5881 may need a bit more to bias correctly. Also most 5881 schematics show R212 as a 22k, 33k should push it yup higher. Is there a zener in your amp? It would be ZD1 in the bias circuit.Hey Guys here comes the next challenge on my 6100 journey. Following my plan I equipped the amp with a NOS set of 6P3S-E tubes. I‘m trying to set the bias to proper specs, plate to cathode voltage reads 448V which seems to be in spec. But with the trim pot fully closed I can’t get below 52mA of idle current which seems way to high for my understanding. Do you have any suggestions how to tackle this issue?
Thanks in advance!
Edit:
I’m measuring with a bias probe at V8
R212 is a 33k resistor