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Paia tubehead mod's?
Paia tubehead mod's?
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Old 15th October 2003, 05:23 AM   #1
Optical is offline Optical  New Zealand
diyAudio Member
Join Date: Nov 2002
Location: Auckland, New Zealand
Default Paia tubehead mod's?

Ive been searching around for tube exciter schematics and this paia tubehead one was the only one i could find (!)
Anyway, people on this board have mentioned that there are lots of great sounding mods you can do to this circuit! apart from upgrading the ps and opamps..

So, does anybody have any more information on modding the paia stuff, or have any designs for other types of tube exciters or similar thing?

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Old 2nd November 2003, 09:43 PM   #2
Optical is offline Optical  New Zealand
diyAudio Member
Join Date: Nov 2002
Location: Auckland, New Zealand
is there anything stopping me raising the B+ rail from 45V to ~150V ? or higher
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Old 6th April 2013, 01:55 PM   #3
pompompom is offline pompompom
diyAudio Member
Join Date: May 2011
if you increase the volage maybe you have to change the capacitors.

Sorry if i am moving up an old thread, but im also interested on those mods i would like to try somehting like "strip" the 12ax7 part, but i dont have 12ax7, i have 6n2p, and a power supply that gives me 6.8v and 44v.

Do you think it would work guys? i mean only the triodes section.
maybe the output is too low, if im not wrong those op amps are buffers, so i can use another kind of buffer and im thinking about this "leaky germanium transistor buffer"

i have a lot of leaky germaniums roaming all over my room...
and i did build that before i have it over there
somone think im on the right way?

Hope you can understand my poor English (I'm from Spain)
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