Old step-up transfo smoked my amp channel..help? - diyAudio
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Old 15th October 2013, 01:57 AM   #1
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Location: Michigan, US
Default Old step-up transfo smoked my amp channel..help?

Hi Guy's, like the title says, my old step-up transformer smoked one of my amp channels. I did swap the panels in the testing process that led up to this disaster, so I know it's not the panels.

I also hooked it up using a short wire instead of the long run I have going through my walls in the basement, as I thought this may have been the cause of the problem.

Welp, turns out it was not, and the only thing I can think of is that the step-up transfo has bought the farm.

As some of you already know, I planned on building some new ESLs in the first place, and planned on upgrading/renewing the associated electronics as well.

So I guess my question to you guys is what is a good quality transformer, at a decent price, that can replace this aging 50:1 setup I currently have?

Mind you, (and hopefully not to complicate things) I'd like these transfos to be able to service my existing panels, and also be compatible with the new panels I plan to build.

Geez...I know this is asking a lot...

The parameters of my old panels are a 100Hz resonance, crossed over at 400Hz and on up... (panels are 14 1/2" wide by 42 in height)

The parameters of my proposed panels are 100Hz resonance, a 200 (or so) x-over, measuring 14" by 60"

So far, with my limited knowledge, I only have two leads.

One is the justrealmusic site, which has a pair of (so-called) 'audiophile' transformers at $98 dollars each, link: Transformers .. the model # is the M299B, that is said to be good down to 150Hz.

The other is from the jazzman's blog, featuring transformers that member calvin had sited as a decent transformer for his application.
Link: VTX-146-050-106 - MULTICOMP - TRANSFORMER, 50VA, 2 X 6V | Newark, now I would need four of these at 32 dollars a piece (not bad). Being that Charlie uses his ESL down to 225Hz, I am assuming that these transfos are capable.

Are these my best choices, or are there better alternatives within this price range?

If you need any more details, I would be glad to provide, I just need to get this sorted.

Thanks Guys..
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Old 15th October 2013, 10:30 AM   #2
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Location: Michigan, US
OK, let me back up a second... I'm going to leave my original post there because that's what I ultimately would like is recommendations, not necessarily on the two transfos I mentioned, but just a general 'steer me in the right direction' recommendation.

That being said, I do have a multimeter here and am wondering if anyone can tell me how and what to measure to determine what went wrong with the one?

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Old 15th October 2013, 12:39 PM   #3
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Join Date: Feb 2008
Location: Jackson,michigan
This Thread will help you with some info,

Toroidal Transformers for ESL Panels

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Old 15th October 2013, 11:10 PM   #5
X83 is offline X83  United States
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Originally Posted by wreckingball View Post
Here's another link with cheaper prices for importing the VTX MultiComp transformers: Toroidal Transformer 230v Single Primary 50va 0 6v 0 6v
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Old 16th October 2013, 01:10 AM   #6
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Thank you jer, and X83!
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