7591's in the Simple SE - diyAudio
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Old 21st October 2010, 10:12 PM   #1
Anchan is offline Anchan  United States
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Default 7591's in the Simple SE

I just ordered some 7591-S tubes for my Simple SE. After I ordered them, I examined the pinouts, and it seems to differ from the EL34, which I know works in this amp. Later, I realized the 7591 is a tetrode, and the 34 is a pentode.

http://www.diyaudio.gr/downloads/7591%20S.pdf

Can I use this tube, or any tetrode for that matter, in this amp?

Thanks

Last edited by Anchan; 21st October 2010 at 10:39 PM.
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Old 22nd October 2010, 12:25 AM   #2
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Quote:
Originally Posted by Anchan View Post
Later, I realized the 7591 is a tetrode,
The data sheet says it's a pentode.

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Originally Posted by Anchan View Post
Can I use this tube
Not unless you make socket adapters, which is a pain. Easier to get something else, 6L6GC, EL34, etc.

jeff
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Old 22nd October 2010, 02:47 AM   #3
Anchan is offline Anchan  United States
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Quote:
Originally Posted by vinylkid58 View Post
The data sheet says it's a pentode.
Your right. Not sure where I got Tetrode from.

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Not unless you make socket adapters, which is a pain. Easier to get something else, 6L6GC, EL34, etc.

jeff

Probably right. I guess I will return them
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Old 22nd October 2010, 03:57 AM   #4
w5jag is offline w5jag  United States
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Generally speaking, octal power tubes with EIA base 7AC, 7S, and 8ET are pin compatible with the Simple SE.

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