Hi,
I'd like to build something like this :
An all tube distortion unit : Culture Vulture and another article with more info on the tubes used : Culture Review .
Any ideas from you guys ???
Thanks,
Jim
I'd like to build something like this :
An all tube distortion unit : Culture Vulture and another article with more info on the tubes used : Culture Review .
Any ideas from you guys ???
Thanks,
Jim
Jim
Why not try a simple line stage to add that bit of valve warmth.
As an alternative to all the usual line stage arrangements you might also like to try a cathode follower output BUT using a 6ES8 variable mu tube. Set at the right bias current this introduces SMALL amounts (because of the 100% feedback in a cathode follower) of compression on the negative going half of the signal, as current drops and mu drops with it. This introduces asymetrical distortion - almost pure 2nd Harmonic. The effect is very subtle but quite lovely. Too much distortion for you? - simply pull the 6ES8 and substitute a 6DJ8.
Cheers,
Ian
Why not try a simple line stage to add that bit of valve warmth.
As an alternative to all the usual line stage arrangements you might also like to try a cathode follower output BUT using a 6ES8 variable mu tube. Set at the right bias current this introduces SMALL amounts (because of the 100% feedback in a cathode follower) of compression on the negative going half of the signal, as current drops and mu drops with it. This introduces asymetrical distortion - almost pure 2nd Harmonic. The effect is very subtle but quite lovely. Too much distortion for you? - simply pull the 6ES8 and substitute a 6DJ8.
Cheers,
Ian
Well, none of the tube gurus are answering, so I'll say what I would do if I were you, assuming that I understand correctly that you are looking for an actual working schematic and not design ideas.
Go to one of the many guitar amp schematic sites and find a tube amp with a 3 stage front end (ignore the power tubes) with at least one pentode and that suits your fancy (I would be looking at Marshall myself). Here is your basic schematic, and you can add a switch to strap/unstrap the pentode(s) to triode. Then you have your triode/pentode distortion modes.
Go to one of the many guitar amp schematic sites and find a tube amp with a 3 stage front end (ignore the power tubes) with at least one pentode and that suits your fancy (I would be looking at Marshall myself). Here is your basic schematic, and you can add a switch to strap/unstrap the pentode(s) to triode. Then you have your triode/pentode distortion modes.
You will also find many knowledgable people over at www.ampage.org there are builders there at all levels with experience to draw from.
London Power Guitar Preamp
You should also check out the "London Power" preamp.
You can get the schemetic here http://www.harmonicappliances.com/tonerator1/t1descript.html
More info at http://www.londonpower.com/ (where you can also get a kit).
I've built two of these and they sound good ...
You should also check out the "London Power" preamp.
You can get the schemetic here http://www.harmonicappliances.com/tonerator1/t1descript.html
More info at http://www.londonpower.com/ (where you can also get a kit).
I've built two of these and they sound good ...
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