descent lower cost audio transformers?

earl parameter · Post by **earl parameter** » Tue Jul 18, 2006 3:25 am

we all know jensen, cinemag and lundahl are nice but i can't afford to experiment with them so is there something that's "not bad" for under like 15-20$ maybe some 10kct-10kct for various things and others for mic pre's. stuff like that.

steven

uk03878 · Post by **uk03878** » Tue Jul 18, 2006 3:36 am

Something like OEPs or Edcors?

earl parameter · Post by **earl parameter** » Tue Jul 18, 2006 4:07 am

thanks. i forgot to mention that i was looking for a member of the crayola family. after a little reading over on prodigy-pro the OEP's might be what i'm after. any place in the states that sells them online?

anything else?

brianroth · Post by **brianroth** » Tue Jul 18, 2006 9:53 am

10K CT for a mic preamp? hmmm...sounds more like a line input transfomer.

What is the exact application???

Bri

earl parameter · Post by **earl parameter** » Tue Jul 18, 2006 10:26 am

no no no... im looking for both 10kct and mic trannies of various ratings for different devices. sorry about that.

brianroth · Post by **brianroth** » Wed Jul 19, 2006 12:52 am

I've experimented with their 600:600 version, but here are a couple of 10K units from Edcor:

http://www.edcorusa.com/transformers/wsm/wsm10k-10k.htm

http://www.edcorusa.com/classx/matching ... 0k-10k.htm

Bri

earl parameter · Post by **earl parameter** » Wed Jul 19, 2006 5:05 am

thanks brian. i noticed those after uk03878 pointed them out. do you have anything to say about their sound at all. if its colored or murky or transparent. what did you use them for?

i'm interested in hearing the OEP's but it seems the only way to get them is via import here

http://export.farnell.com/jsp/endecaSea ... =gensearch

i might give it a shot, but i'm not quite sure how much of a hassle shipping will be. maybe i'll just hang out on ebay for older stuff, also get a few edcors to try out.

The Scum · Post by **The Scum** » Wed Jul 19, 2006 12:04 pm

A couple of other options to check into:

Mouser carry the little Xicon transformers for a couple bucks each. They're definitely colored, and cheap enough the fiddle with. There's nothing specifically good as a mic input trafo, but you can turn some of them backwards if you need a step-up.

Any surplus shop will have 600:600 telephone transformers, worth fiddling with, also.

There are also some reasonable signal transformers from Triad and Tamura around. 600:600 and 10K:10K are available. I've used the Triad 300:300:300:300 in several applications with no problems. It can be wired 150:600 for playing with on the front of a mic pre.

If course, for under $10 each, none of these will be sheilded for use as mic input transformers.

Byron Jacquot

brianroth · Post by **brianroth** » Thu Jul 20, 2006 12:48 am

crashsick wrote:thanks brian. i noticed those after uk03878 pointed them out. do you have anything to say about their sound at all. if its colored or murky or transparent. what did you use them for?

I've only messed with them on the test bench. However, they spec out quite well on that basis so I think they won't be too bad in an audio path.

They are cheap enough to just buy one or two and experiment!

Bri

earl parameter · Post by **earl parameter** » Fri Jul 21, 2006 11:13 am

i have some of the Xicon. they were like $1.50 pretty badass really. if you pound them they break up in usable way but i was looking for something a little cleaner. i've seen the triad name a couple times maybe i'll check them out. maybe try the telephone / modem trannies too. but i think i'll end up with some of the edcors, and trying to get some of those OEP's.

thanks everyone.

EisenAudio · Post by **EisenAudio** » Fri Jul 21, 2006 8:59 pm

The UTC "Ouncer" series, e.g. 0-1, 0-8, 0-12, etc. show up on eBay fairly regularly for $10 or so. Here's a pair right now. Very colored and pretty cool-souding, in the right applications. Common characteristics among the lot are subtle low end rolloff, forward midrange, easy to overload. They've been used in some classic gear, as you may know. This page should help you pick the ones you want.

Skipwave · Post by **Skipwave** » Mon Jul 24, 2006 11:30 am

Thanks for that nice color scan of the UTC catalog page.

I just used O-16 in front of my Hampton-design JFET pre. Sounds amazing, and it was $20.

You definitely need to look at the frequency response graphs to get an idea of the zobel network needed to flatten them out. See VacuumBrain.

lightning_electronics · Post by **lightning_electronics** » Wed Aug 02, 2006 10:31 pm

what about hammond transformers? they're decently cheap, especially from angela.com; they have all sorts of line, mic, and various other transformers.

CurtZHP · Post by **CurtZHP** » Fri Aug 04, 2006 7:48 am

You can get the OEP transformers through Newark Electronics (www.newark.com). They don't stock them, but they can get them for you.

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descent lower cost audio transformers?

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