Hi guys.
I am rebuilding/restoring jackson model 103 tube tester.
It has 6C4 triode tube in it. The one that was there is bad, need to be replaced.
Now, I don't have any 6C4 tubes around but I have bunch of 12AU7 tubes. So my thought was: to add 9pin socket with inside-the-unit switch or to completely replace 7-pin socket with 9-pin socket , rewire and use half of 12AU7 instead.
The question is should this work fine for the tester or am I asking for trouble?
If it is ok, then the other half of the question would be how to do it right, - I mean, what to do with the second triode of the tube - leave open, ground or what?
Or should I just forget about the whole "idea" and just swing over eBay for 6C4s?
thanks in advance for an advice.
/best regards
I am rebuilding/restoring jackson model 103 tube tester.
It has 6C4 triode tube in it. The one that was there is bad, need to be replaced.
Now, I don't have any 6C4 tubes around but I have bunch of 12AU7 tubes. So my thought was: to add 9pin socket with inside-the-unit switch or to completely replace 7-pin socket with 9-pin socket , rewire and use half of 12AU7 instead.
The question is should this work fine for the tester or am I asking for trouble?
If it is ok, then the other half of the question would be how to do it right, - I mean, what to do with the second triode of the tube - leave open, ground or what?
Or should I just forget about the whole "idea" and just swing over eBay for 6C4s?
thanks in advance for an advice.
/best regards
Yeah, good point
*****
seriouselly, though
I guess my "idea" does not make any practical sense
but then, I can say the same thing about the fact that I am sitting here spending all that time restoring this rusty metal box to begin with. So common sense is not a common thing in my case
..and I blame goverment for that.ethermion said:
*****
seriouselly, though
I guess my "idea" does not make any practical sense
but then, I can say the same thing about the fact that I am sitting here spending all that time restoring this rusty metal box to begin with. So common sense is not a common thing in my case
not so, unless I spend another three plus nights and days or so with it.ethermion said:
It's easier to build a new one than to restor a such thing in such shape.
heh heh, no way. Rust and dirt is my specialty. I take no prisonersethermion said:
. well, my main idea was actully to add the second socket with switch inside the unit, so it would be an extra option, so it can be 'switched' to use either 6C4 either 12AU7.
That's why I asked. The characteristics on paper look the same. I've read somewhere people literally mentioning that 6C4 is basically the same as 12AU7 but single. So I thought somebody here may know first hand that it is or is not ok to use either in the same circuit and expecting the same operation (result).ethermion said:
tested on the tester that is not down.ethermion said:
I guess the right way to do it is to get 6C4. Put back together the unit , test some tubes make notes, then add the 12AU7 option, try it test same tubes, make notes, and then conclude whether it was or was not a "good idea".
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