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Does O-netics make SE OPTs?
Does O-netics make SE OPTs?
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Old 21st September 2015, 12:50 AM   #1
DAK808 is offline DAK808  United States
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Does O-netics make SE OPTs?
Default Does O-netics make SE OPTs?

Hi, I am looking to source some SE opt for my 813 tube project. And finding them is challenging. I did not find a "products" page for O-netics so I am asking if someone knows if they have a website.
For my project, I am thinking that I will need about 50watts and 5 to 7k primary impedance and 4 and 8 secondaries. I have done some research and electra print looks good and Lundahl . But I would like more choices and they are about the only 2 USA manufacturers that I found. I only want to buy or source from the US. Thank you for your suggestions.
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Old 21st September 2015, 01:14 AM   #2
Pano is offline Pano  United States
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Does O-netics make SE OPTs?
Yes, Bud makes SE OPT. Several levels, IIRC. I'm sure he will chime in.
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Old 21st September 2015, 04:29 AM   #3
tubo is offline tubo  Philippines
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Bud makes very good sounding se opts.... i have tried level 1,2,3 on 45,2a3, and 300b...

Google onetics transformers...

thanks
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Old 21st September 2015, 04:31 AM   #4
tubo is offline tubo  Philippines
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http://www.manta.com/c/mmswg19/o-netics-ltd
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Old 22nd September 2015, 03:15 AM   #5
DAK808 is offline DAK808  United States
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Does O-netics make SE OPTs?
I checked out the link but I still get no further information from that page. I am not sure how to get to a product page.
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Old 22nd September 2015, 03:21 AM   #6
tubo is offline tubo  Philippines
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You would need to email or call Bud as he doesnt have a catalog of what he makes... i may be wrong about that.... mostly he makes custom opts for hifi applications but i believe his main products are for pro audio stuff... its worth a look as he makes world class opts...
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Old 22nd September 2015, 04:38 AM   #7
JayReed is offline JayReed
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Old 27th September 2015, 01:12 AM   #8
BudP is offline BudP  United States
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I inadvertently stumbled across this thread. Rarely get notices.

That web site that JayReed points to is not active. I will have to go and see which build it is. It's not a misleadng site, I just decided I did not want the extra work a web site would bring. Instead, you might PM TURBO about our SE OPT's as he has an in with our dealer.
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Old 27th September 2015, 01:17 AM   #9
tubo is offline tubo  Philippines
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Hello guys thats me Bud is referring to.... i have level 1 and 2 se opts for 45,2a3, and 300b... im currently usinglevel 3 opt on my 45...

thanks
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Old 28th September 2015, 12:02 AM   #10
BudP is offline BudP  United States
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With reference to the 813 tube. I only guarantee long life and high performance audio transformers to a maximum voltage of 800 VDC applied to the primary. I do know how to build to 2500 VDC operational internal withstand, but the form factor you must use and the materials required to deal with the corona created by that voltage, become rather extreme. All of the things you do not want in physical layout of the windings are forced by high coil voltages and for anything above about 1200 volts of potential you want 100% immersion in evacuated oil.
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