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Old 13th May 2010, 03:18 PM   #11
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Hi djn,

I have to agree with you, it won't be difficult to build at all. Come to think of it, the hardest part might be to source the transformers (even if you enlist the help of a custom winder), since one way or the other, you need to figure out the turns ratio and working frequency band for each.

Have fun!
Kenneth
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Old 13th May 2010, 04:00 PM   #12
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Quote:
Originally Posted by bolserst View Post
Stumbled on this link last night.
There are a few pics of the interface box 1/2 to 2/3 the way down the page.

Audio Federation

Thanks B, I think there will be some mystery under those two plastic boxes. I'll sure to burn up a lot of digital film on this one.
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Old 13th May 2010, 04:01 PM   #13
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Quote:
Originally Posted by kavermei View Post
Hi djn,

I have to agree with you, it won't be difficult to build at all. Come to think of it, the hardest part might be to source the transformers (even if you enlist the help of a custom winder), since one way or the other, you need to figure out the turns ratio and working frequency band for each.

Have fun!
Kenneth
I talked to a guy (Russ) at Justrightmusic last night and he does custom widings for ESL speakers. He has his own line of ESL speakers and knows the Sound Labs well. He said he could wind up what ever I needed.
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Old 13th May 2010, 04:19 PM   #14
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Quote:
Originally Posted by djn View Post
Thanks B, I think there will be some mystery under those two plastic boxes. I'll sure to burn up a lot of digital film on this one.
From what I can see, one of those boxes has to contain the HV power supply, which should be pretty easy to build yourself. Plenty of guys here that can help if you have questions. The other box must contain the tapped inductor used to LP the larger transformer.

If Russ from Just Real Music is familiar with the Sound Lab products he should be able to tell you what voltage is needed for the HV supply, and what value of inductor is needed. Very cool that he can supply transformers for you. That would be the hardest part to make yourself.

Looking forward to your pics
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Old 13th May 2010, 04:23 PM   #15
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He is not sure of the voltages, but when I have the stock ones all torn apart, I will get all the volt and amp readings and give him that data. I think the volts of the different taps for the bass will be important....however, my friend runs his in the flat position so I might just get that voltage and wind the transformers to that. We will see. Yep, I will post pix.
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Old 13th May 2010, 04:35 PM   #16
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Are you in need of the whole interface?
You had originaly stated that you needed a power supply. jer
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Old 13th May 2010, 05:07 PM   #17
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Yep, it was my ignorance about ESLs. I need the entire back box with the crossovers and transformers and what ever else is back there.
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Old 14th May 2010, 04:16 PM   #18
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Hi all, I just talked to a friend of mine who owns a metal fab shop. A bunch of us work on our own projects there after hours. I showed him the pictures of the box that SL uses to house there trannies and such and he said he could duplicate that in a coupld house. He has all the metal brakes and I can weld anything. So I am getting more and more excited about this.
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Old 14th May 2010, 08:09 PM   #19
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A non ferrous case would be better and a wooden case would be better again. If you are building from scratch.

A used set of Acoustat interfaces would drive your panels well and you can tap off the HT supply at what ever voltage that you need. Would be a lot cheaper than having transformers built from scratch. You could compare them to your buddy's and see how they stack up. If you decided to go with building Sound Lab transformers you would not have any trouble selling off the Acoustats or you could keep them for a DIY project of your own down the road. Just some possible options.
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Old 15th May 2010, 01:23 AM   #20
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Hi Moray, funny you should bring up the Acoustat. A friend of mine just said the same thing today. I am too ignorant about the whole ESL thing to know if it would work or not, and, I don't know what Acoustats are. I did find Acoustat tube amps on the net that are supose to be just for ESL speakers.
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