To use or not to use odd tubes &nbs

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gammelnalle
Junior tube assistant
Posts: 26
(3/27/04 9:19 am)
 To use or not to use odd tubes
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 I've got a bunch of odd tubes NOS
6AK6
6BH6
6C4
6BN6
6DT6
6j6
6CG8

any any good for a guitar amp... (I have at least 10 of each)

And what does "sharp cutoff pentode" mean?? 6BH6 & 6DT6

I think the 6AK6 will be good as a reverb driver SE ???

Any suggestion is welcome....
 
björn from sweden

 
ganzonimx
Hey get your own solder
Posts: 440
(3/27/04 10:16 am)
 Re: To use or not to use odd tubes
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 Ampeg used in the SVT as last preamp tube a 6C4...

Cris
 
Tiny Daddy
I will work on all amps
Posts: 574
(3/27/04 10:51 am)
 Re: To use or not to use odd tubes
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 Sharp cutoff means linear operation as opposed to remote cutoff pentodes which are intended for AGC purposes. Pentodes can be noisy at audio frequencies and give way too much gain for the kind of overload distortion that is usually wanted in guitar amps.
6C4 is half of 12AU7 and has been used in some amps, usually as phase splitter.
6J6 is a filament current hog, drawing as much as 6V6, but could be used as phase splitter or as reverb driver with both plates paralleled.
All the tubes you mentioned have disadvantages compared to the tubes usually found in guitar amps.
 
gammelnalle
Junior tube assistant
Posts: 27
(3/27/04 12:45 pm)
 Re: To use or not to use odd tubes
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 yes but they are cheep  

thanks for advice, any site where I can read more???

björn
 
mrr3000gt
Posts: 373
(3/28/04 11:13 pm)
 Re: To use or not to use odd tubes
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This guy uses compactrons to make a simple (and maybe dangerous) audio amplifier:

Audio amplfiiers from TV compactrons

 
 
gammelnalle
Junior tube assistant
Posts: 28
(3/29/04 2:15 am)
 Re: To use or not to use odd tubes
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Great.... BUT as you said; dangerous !!!! but I like the idea of using old parts...


 


björn
 
 
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