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Making your own transformers?
Making your own transformers?
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Old 5th July 2005, 05:16 AM   #1
furly is offline furly  Canada
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Default Making your own transformers?

Just wondering if anyone has ever tried winding their own transformers out of Radio Shack transformers such as Sanders suggests.

I am a lowly engineering student looking to complete a set of ESL's at low cost. This being my first attempt at such a task, I am not too concerned with great quality. Mediocre would be great the first time around!!

Any suggestions (particularily on transformers)?
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Old 5th July 2005, 09:21 PM   #2
moray james is offline moray james  Canada
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Default on the cheap fo while you wind

A buddy of mine just snagged a set of Medalion 0ne plus 0ne Acoustats off of EBay for $57.00 Canadian the pair. Cheapest I have ever seen (in Vancouver). Get a pair of these and play with them while you work on rolling your own. Best regards Moray James.
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Old 18th July 2005, 01:44 PM   #3
EC8010 is offline EC8010  United Kingdom
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My experience from making E/S headphones is that the hard bit is making the diaphragm and insulating spacers so that the charge actually ends up all over the diaphragm rather than quietly leaking away somewhere. My point is that the problem with electrostatic loudspeakers is not getting mediocre versius superb sound quality - it's getting them working at all! If you had a push-pull valve amplifier, you could connect the loudspeakers to the primaries of the output transformers. Try hunting for an old push-pull amplifier.
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
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Old 18th July 2005, 03:09 PM   #4
bear is offline bear
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Making your own transformers?
Sander's instructions will work.

They don't need to be any particular brand of transformers as long as you have a pair and the core material is M6 or (better) "Permalloy".

You can often simply take a standard tube output transformer and make it work fine. Sanders used to sell xfmrs that are/were essentially that. You do need to note the requisite step up turns ratio for your speakers that will match the step down *impedance* ratio of the output transformers. You'll be running them in reverse, of course.

But, yes you can wind your own, if you have time, take care and have some basic materials and a little knowledge.

Moray, that's incredibly cheap for the Acoustat's!
Every once in a while there is a bargain on ePay.

http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- every once in a while I say something that makes sense... ]
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