Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders.

---

[ Follow Ups ] Thread: [ Display  All  Email ] [ Tube DIY Asylum ]

---

[ Alert Moderator ] [ Edit ] [ Delete ]

---

C3G 300B revenge amplifier

84.64.122.6

Posted by red on October 21, 2006 at 04:38:52

I am attempting to build the Revenge C3m driving 300B amplifier on this link my Mauri Pannari www.lundahl.se/pdfs/other/pannari.pdf

I would like to use a triode strapped C3G instead of a C3M mainly because I have 6.3v heater voltage.

Having put the amp together I noticed that the 300b draws ~130ma which is higher than the 80-90 that it needs to draw.

I suspect that the c3G needs different anode load resistor and probably different cathode resistor and cathode capacitor.

The circuit shows the C3M with a 22k anode load resitor with cathode 1.2k and 560mf. I have tried reducing the cathode resitor for C3G to .5k but the 300b still draws ~130ma.

Does anyone know how I can adapt Mauri's circuit to work with the C3G?

Any help appreciated.

Red

This post is made possible by the generous support of people like you and our sponsors:

Schiit Audio

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---