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Old 1st October 2006, 10:06 PM   #1
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Default Looking for dual power triodes.

Can anyone suggest any dual power triodes which are suitable for use in audio (other than the 6080 family which I have already used).

Thanks

Shoog
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Old 1st October 2006, 11:06 PM   #2
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You may include the 6528 with the 6080, but it's a bigger beast. Going the other way there's the 6BX7 which sounds pretty nice in outputs at lower power. I'm sure you know about all the dissimilar triodes like 6EM7, which only have one beefy section.
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Old 1st October 2006, 11:37 PM   #3
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Why not try something a little different like a Cossor 220B/240B.
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Old 2nd October 2006, 12:13 AM   #4
billr is offline billr  New Zealand
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if you get Valve Amplifiers 3rd edition, there is a pushpull amp using 6528s in there.

wonderful design, and expertly engineered
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Old 2nd October 2006, 12:36 AM   #5
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Although Morgan Jones is all in favour of Push Pull amplifiers, he used the 6528 to build his scrapbox challenge: a SE design.

Erik
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Old 2nd October 2006, 08:47 AM   #6
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The 6528 looks interesting - but no more linear than the 6080's. I also don't really need any extra power. Also the input capacitance and medium Mu present problems for my prefered interstage transformer phase splitting.

The 220B and 240B look funky and interesting.

Shoog
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Old 2nd October 2006, 09:39 AM   #7
billr is offline billr  New Zealand
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you're right on the valves, the pp design was using the 13e1s
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Old 2nd October 2006, 09:58 AM   #8
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Is the 6AS7G normally included in the 6080-family? Otherwise that might be a suggestion.
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Old 2nd October 2006, 12:44 PM   #9
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How about the 5998. Looks slightly more linear than the 6080 and also has higher mu so should be easier to drag a bit more power out of it. Otherwise its very similar.

Shoog
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Old 2nd October 2006, 01:03 PM   #10
anatech is offline anatech  Canada
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Hi Shoog,
There is always the 6N7. A small class B push pull tube. It will operate with zero grid bias (says the manual).

The 6AS7G is lumped in with the 6080 family. Rather tightly I might add.

-Chris
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