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coco
 Post subject: Second Primary Impedance
PostPosted: Thu Apr 27, 2006 10:15 pm 
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Holy Ghost
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If you had a choice for a second primary impedance for a 20 watt tranny, what would you choose?

and..

If you were going to use 6V6s in an 18 watt, what output transformer impedance would be preferred for a B+ of 350V? 8K, 6K, 5K?

I am getting some transformers made up & would like to get a second primary tap set that would be optimized for a 6V6 version of the 18 watt.

8K for the EL84, ideally, what do you think for the 6V6s?

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Legin
 Post subject:
PostPosted: Thu Apr 27, 2006 11:56 pm 
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Do a Poll Stephen, I go for 6.5K and 8K as you already know.
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bitsandvolts
 Post subject:
PostPosted: Fri Apr 28, 2006 9:47 am 
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s2 once told me that the 6v6's like to see 8k, and anything less than that isn't good for the tubes....whereas you can go down to 4k with el84s.

I think, so long as you have a good solid 8k tap that can handle the juice from 6v6s, you're golden!

-F
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coco
 Post subject:
PostPosted: Fri Apr 28, 2006 11:10 pm 
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OK, but I have a choice. The first prototype had 5K, but I could go to 4K or 6.6K. :?

4K would be cool because theroetically, you could use it for a lightning as well. 6.6K might make the deluxe crowd happy.

Decisions - Decisions. I need an answer in 48 hours!

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Bear
 Post subject:
PostPosted: Sat Apr 29, 2006 12:11 am 
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6.6k is the norm for tweed Deluxe, but to judge by MM offerings, they may have crept up towards 8k at the end of that era.

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