Hi guys I'm new here and thrilled to find your group. I have built a few Fender Tweeds and a JTM-45 combo amp. I recently graduated to AB763 circuits. I am building a Fender Twin Reverb and wanted to try Mr. Dumble's Jazz/Rock and Boost circuit for a Twin. Has anyone tried it? Does it work as posted on the Dumble Heaven web site. I am no expert but it looks like a lot of the info there is educated guesswork. I mean no disrespect and am greatfull for everyones contributions.
Where can I get 22Meg resistors? None of the people I deal with stock them.......
Thanks in advance
Dumble Heaven Mod
Moderators: pompeiisneaks, Colossal
Re: Dumble Heaven Mod
I can't speak to how it works. But you can get 22M Vishay metal film resistors from Mouser. Part # 594-5073DM22M00J are the 1-watters, Part # 71-CMF55-F-22M are 1/4 watt. Either should be fine in those circuits.
-
Analog Assassin
- Posts: 58
- Joined: Mon May 14, 2007 11:15 pm
Re: Dumble Heaven Mod
Just curious, and not to hijack a thread, but what are the differences between the stock blackface clean sound and the dumble clean sound?
-
skyboltone
- Posts: 2287
- Joined: Wed May 10, 2006 7:02 pm
- Location: Sparks, NV, where nowhere looks like home.
Re: Dumble Heaven Mod
Most leave the Jazz/Rock switch out, leave it in rock, but lifting the ground from the tone stack will give you the boost.
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: Dumble Heaven Mod
Yes, it does. But I also would not implement a Jazz/Rock switch. Maybe try converting the Normal channel to early 80ies Dumble clean specs with the PAB. Just check the 101 schematic. I have performed this mod with very nice results.fyrcrack wrote:Hi guys I'm new here and thrilled to find your group. I have built a few Fender Tweeds and a JTM-45 combo amp. I recently graduated to AB763 circuits. I am building a Fender Twin Reverb and wanted to try Mr. Dumble's Jazz/Rock and Boost circuit for a Twin. Has anyone tried it? Does it work as posted on the Dumble Heaven web site. I am no expert but it looks like a lot of the info there is educated guesswork. I mean no disrespect and am greatfull for everyones contributions.
Where can I get 22Meg resistors? None of the people I deal with stock them.......
Thanks in advance
rock jazz
BluzMike
What are the results of this mod in the sound of the clean channel. Have been reading as much as I can trying to learn and this sounds like a sensible mod.
I am not a tech, just learning at a very old age
What are the results of this mod in the sound of the clean channel. Have been reading as much as I can trying to learn and this sounds like a sensible mod.
I am not a tech, just learning at a very old age