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Old 4th March 2012, 04:49 PM   #1
Phildog is offline Phildog  United States
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Join Date: Nov 2011
Default Conrad Johnson owners

I was given an output transformer for a build I'm working on. It's a really nice piece of iron, but I haven't been able to gather much information on it. I DO know that it was made by Northlake Engineering in 1974.

Judging by the looks of it, it appears to be a PP, with three primaries and 4 secondaries.

Here's a few pics...

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1005 = Northlake Engineering
4 = 1974
17= 17th week

The remaining information is what I'd like to know about, as I would like to know the data on it if it can be found. Above the Northlake date stamp is C56 36E

I found out through Google, that Northlake made transformers for Ampeg, CJ, and a few other tube amp mfgs. So, if any of you have a CJ, can you verify that this is what I have? What would be terrific if someone can confirm this. And it would be even sweeter if they had a photo of how the secondary leads are wired in. Or at least a schematic.

Thanks a lot guys. Like I said, this is a really nice chunk of iron, but I'd like to know how to install it correctly to power 2x6L6's in push pull.
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