Tube Amp Archive

Phil_S wrote:

dobbhill wrote:Phil: you mean 50k ohm 50 ohm pot, yes?
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Yes. I'll edit the post.

Thanks guys for the help and info. I will try this
Burnie

This may be an old thread, but it was still very helpful. Thanks! +1, I am building my first two guitars, solid bodies but not the necks, they won't be perfect:shock:, I keep changing the design. I want to build amps also and know next to nothing so this thread is very helpful. Will get Ultimate To...

Thanks jelle When I asked Nik he said it was okay awhile ago. What I wanted to know is are there any values in the circuit that would make these tubes better in terms of tone. I just tend to like el34's better than 6l6's. Sorry for my lack of knowledge but it gets better as I study this stuff. I hav...

I want to run el34's in mine, is there anything I need to change to make that optimum. I am on a steep learning curve as I am not a tech but love all this. Stayed up 'til 2:00 last night reading everything and downloaded some electronic manuals to study, would like eventually to build my own amp. I ...

Point taken, I am just an inveterate tweaker, but will take your advice-thank you.

Thx 10thTx My amp is no longer stock and I believe that tube is now part of a gain stage. Let me be up front in saying I am a complete newcomer to this technology but it is fascinating. I don't know much at all but I want to learn. I don't like taking my amps to someone else and not being able to ac...

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

I have a 1484 with a fixed bias and I wanted to change it to an adjustable bias or a cathode bias, I know it is possible but I wanted to know if it was expensive to have done, I am not knowledgeable enough to attempt this. I was more curious as to thoughts on how much, or little, a cathode bias woul...

Here's the resistor I'm talking about. Nik said they did use 158k for a while, but that they are all 150k now. I don't find the Overdrive harsh, it's aggressive yes, but in a very good way. At first, before the mods, it was all a bit too much, the amp is much more controllable now. Regarding harshn...

It is really fast, they are a day ahead and My amp shipped last Monday their time and got here Thursday my time. It is a killer amp by the way. A tech friend of mine ran some tests on it yesterday. The plate voltage measured 462 volts. we ran a response curve, and if you are interested, I think I ca...

ic-racer, I feel like I am watching a soap opera about electrons, and I am hooked, cannot wait for the next installment :lol: Just received my Ceriatone Overtone Thursday, and am running GT el34ls's in it and using a Lansing Altec 417 8c speaker which matches perfectly with it. I am making my first ...

Thank you Dimitri, Appreciate that. What speakers sound good? I have a Altec 417 8c, Celestion heritage series g12 65 and a scumback M75 with a large dustcap. The mods you guys are doing I will have to take one step at a time, starting with the resistor on the 100k trimmer. I am not a tech, but I un...

I have the #124 schematic, but I don't know what it references, sorry for my ignorance. Is it the design Nik now uses #124 is a Dumble ODS amp, I'm not expert on the Ceriatone Overtone Special but I think that is the schem used (with some minor changes) so is there another schematic? others are her...

Hi, all you experts, I have been following this thread because I am a complete noob at this. I have the #124 schematic, but I don't know what it references, sorry for my ignorance. Is it the design Nik now uses or something else, so is there another schematic? The reason I ask is I would like to do ...