6CG7 swap for EL84 ?

petemoore · 12-31-2007, 08:30 AM

Having never tried swapping tube types, I'm hesitant to try it.
EL84:
ftp://ftp.eierc.com/pub/rc/Ei-EL84.pdf
6CG7:
http://www.triodeel.com/6cg7_p1.gif
Heaters, inputs/outputs, and pin 9 being internal shield look compatible, these tube types look similar in many ways.
18w clone W/342v on the plates.
Do you think I should just drop in the 6CG7's and test them or am I missing something first ?

Alex R · 12-31-2007, 04:37 PM

No, the 6CG7 is a twin triode, wired more like a 12AX7 and not at all like an EL84.

12-31-2007, 08:30 AM	#1
petemoore Senior Member Join Date: May 2006 Posts: 189	6CG7 swap for EL84 ? Having never tried swapping tube types, I'm hesitant to try it. EL84: ftp://ftp.eierc.com/pub/rc/Ei-EL84.pdf 6CG7: http://www.triodeel.com/6cg7_p1.gif Heaters, inputs/outputs, and pin 9 being internal shield look compatible, these tube types look similar in many ways. 18w clone W/342v on the plates. Do you think I should just drop in the 6CG7's and test them or am I missing something first ?

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12-31-2007, 04:37 PM	#2
Alex R Supporting Member Join Date: Mar 2007 Location: UK Posts: 675	No, the 6CG7 is a twin triode, wired more like a 12AX7 and not at all like an EL84.

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