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Output Transformers for an EL84 Push-Pull Amp
Output Transformers for an EL84 Push-Pull Amp
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Old 26th April 2006, 07:27 AM   #1
boneshaker is offline boneshaker  Europe
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Join Date: Apr 2005
Location: Mainz
Default Output Transformers for an EL84 Push-Pull Amp


I am looking for a pair of OTs for a 15W EL84 Push Pull amp (for 8 Ohm speakers).

It's a kit from World Audio Design (KEL84: http://www.world-designs.co.uk/acatalog/kel84.pdf ) and comes with stock OTs that are of comparable quality to Hammonds. This is a simple PP circuit. I am looking for a clear improvement over the stock OTs, without going overboard cost-wise - e.g. $800 for OTs would be overkill for this amp.

(The stock OTs come with ultra linear taps. Unfortunately, I couldn't get the exact specs of the stock OTs.)

Are there some specific manufacturers you would recommend? How about O-Netics?

Many thanks
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Old 26th April 2006, 08:27 AM   #2
rcavictim is offline rcavictim  Canada
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Location: Next to an open wormhole NW of Toronto
Try and score a couple of vintage Heathkit EA-3 mono amps on ebay. These have very good ultralinear output xfmers designed for EL84 and go quite inexpensively. Another Heathkit amp that used P-P U/L EL84's and had the same excellent output iron is the AA-100 stereo amp. These were all circa 1960 or so.
"There are more worlds than the one you can hold in your hand." Albert Hosteen, Navajo spiritual elder and code-breaker, X-Files TV Series.
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Old 3rd August 2006, 07:52 PM   #3
graeme uk is offline graeme uk  United Kingdom
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Join Date: Dec 2005
Location: essex
I just wuilt a WAD el84.
Have you tried the world designs forum?
Folks on there will point you in the right derection with modding this amp.
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