K&K Audio / Lundahl Transformers

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Desperately seeking SE 2:1

141.228.114.7

Posted on December 6, 2016 at 23:39:27
handsome
Audiophile

Posts: 4
Joined: January 16, 2010
hi kevin,
i am looking for a 2:1 SE line output/interstage xformer to match to a tube with Rp~4k @ ~8mA - tube mu is 4 so higher than 2:1 is not on... anything in the LLundahl range you recommend?

 

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RE: Desperately seeking SE 2:1, posted on December 7, 2016 at 19:06:45
KevinC
Manufacturer

Posts: 2897
Location: NC
Joined: April 19, 2001
The LL1671/10mA (2:1) is a candidate, as is the LL1692A/10mA (1.75:1).

Kevin Carter
K&K Audio
www.kandkaudio.com

 

RE: Desperately seeking SE 2:1, posted on December 7, 2016 at 23:49:19
handsome
Audiophile

Posts: 4
Joined: January 16, 2010
Thanks Kevin.
Will either of these have more inductance than stated when gapped for 10mA?

 

RE: Desperately seeking SE 2:1, posted on December 8, 2016 at 07:25:13
KevinC
Manufacturer

Posts: 2897
Location: NC
Joined: April 19, 2001
I estimate the primary inductances as:

LL1671/10mA 4:2 100H
LL1692A/10mA 3.5:2 170H

Kevin Carter
K&K Audio
www.kandkaudio.com

 

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