6GU7 in an Aikido?

Original Burnedfingers · 1st June 2009, 12:08 PM

Just wondering if I could use 6GU7 in place of the 6Fq7 (input tube) in my Bas Aikido board. Would I have to change cathode resistors?

Original Burnedfingers · 4th June 2009, 12:47 AM

Any thoughts?

rman · 4th June 2009, 01:28 AM

Hi.

I think Broskie mentions in hi latest entry about using that tube.

Original Burnedfingers · 4th June 2009, 10:49 AM

Thank you

I haven't been to his site in over a year. I found the article.

I tried the 6Gu7's without any circuit changes and they sound great.

Vincent77 · 18th February 2011, 07:52 PM

You should increase Rk, though, if you use the 6GU7.

In my Aikido (240v B+) I use 470 ohm for the 6CG7 and 560 ohm for the 6GU7.

1st June 2009, 12:08 PM	#1
Original Burnedfingers diyAudio Member Join Date: Nov 2002	6GU7 in an Aikido? Just wondering if I could use 6GU7 in place of the 6Fq7 (input tube) in my Bas Aikido board. Would I have to change cathode resistors?

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4th June 2009, 12:47 AM	#2
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Any thoughts?

4th June 2009, 01:28 AM	#3
rman diyAudio Member Join Date: Oct 2007	Hi. I think Broskie mentions in hi latest entry about using that tube.

4th June 2009, 10:49 AM	#4
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Thank you I haven't been to his site in over a year. I found the article. I tried the 6Gu7's without any circuit changes and they sound great.

18th February 2011, 07:52 PM	#5
Vincent77 diyAudio Member Join Date: Jan 2011 Location: Paris	You should increase Rk, though, if you use the 6GU7. In my Aikido (240v B+) I use 470 ohm for the 6CG7 and 560 ohm for the 6GU7.

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