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Old 01-31-2013, 06:53 PM   #1
Dr.Tong
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tube fuzz pedal, is it possible?

I've got these 3 extra 12ax7's lying around, so I figured I'd do something cool with them. The first thing I thought of was a fuzz pedal with a tube in it. Is this possible? I've heard of people replacing the transistors with tube sockets/tubes, but I can't get any legit confirmation. If it is possible, does anyone have a schematic or instructions? Any input or other ideas for tube pedals is awesome! Thanks guys
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Old 01-31-2013, 07:10 PM   #2
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something like this maybe? : link

There's some videos on youtube that you can listen to as well.
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Old 01-31-2013, 08:15 PM   #3
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maybe something like a valve caster could work

edit
dammit
^
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Old 01-31-2013, 08:36 PM   #4
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Does it have to be a 12au7? or can I replace that with my 12ax7?
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Old 01-31-2013, 08:39 PM   #5
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Quote:
Originally Posted by Dr.Tong
Does it have to be a 12au7? or can I replace that with my 12ax7?



I'm not about to dig through that forum (100+ pages), but I remember someone did it

link
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Old 01-31-2013, 08:42 PM   #6
Dr.Tong
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Sweet thanks. I'm a little confused though due to multiple diagrams, does it require a pcb?
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Old 01-31-2013, 11:36 PM   #7
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Quote:
Originally Posted by Dr.Tong
Sweet thanks. I'm a little confused though due to multiple diagrams, does it require a pcb?


it doesnt but pcb usually make it cleaner and easier to do it

you can buy a perfboard if you dont want to or dont have the reasources to make a pcb
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Old 02-01-2013, 06:53 AM   #8
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12AX7s and 12AU7s are interchangeable. A 12AX7 has the most gain of the two.
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Old 02-01-2013, 01:37 PM   #9
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From what I understand the 12ax7s need the large plate voltages, where as the 12au7s were designed to operate with low or high voltages.
After my current project I want to take a stab at building a tube distortion pedal, I figure one way to do it would be using the ic and capacitor network of the murder one http://www.google.ca/search?q=murde...480&bih=208#i=1
But for a single tube pedal.

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Old 02-03-2013, 01:06 AM   #10
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12au7 you can run on lower voltages.
12ax7, not so much.
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Old 02-03-2013, 02:11 PM   #11
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