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Old 7th August 2006, 06:17 PM   #1
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Question Locating Preamp Output Transformers

Can anyone point me toward some decent but not too expensive preamp output transformers? Something like 10K:600 to plate load a 6sn7/6j5 or something similar. I have a pair of edcors, but am looking for something a bit higher in quality, but less expensive than the electra prints. Thoughts?
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Old 7th August 2006, 06:30 PM   #2
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Don't know if you remember this thread, but it should be of some help:

http://www.diyaudio.com/forums/showt...789#post408789

This looks promising:

http://www.cinemag.biz/output/CM-9589.pdf
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Old 8th August 2006, 01:08 AM   #3
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Default Lundahl 1660S

They are $85 or so each, but they are electrostatically shielded
and are fantastic for a PP 6SN7 driving 600 ohms out. In fact,
they were made for this application. Everything else is $100 each, Sowter (when you factor in currency and shipping), Jensen, etc.

I did also of work with the Edcors, both the 10K:600 and
the 10K:150. They cant take much DC imbalance, so I abandoned
PP triodes driving the Edcors and tried running them parafeed SE.
That worked out much better for bass response. I also had to use
a low Rp tube to get the bass I wanted, 5687s, not 6CG7s.

Despite the limitations with Edcors as a line-out, they work
fantastically as line-in and phase splitters. I've been driving
10K:10K with a solid-state differential line chip (Analog SSM2142).
They sound fantasticc, with a solid state driver to boot....

-- Jim
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