5K 49% nickel SET outputs.

Design and use of the various types.
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dave slagle
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5K 49% nickel SET outputs.

Post by dave slagle »

Hey,

Just finished these up for a customer. He is driving a 45 so 2W is all that is needed and I was able to use a reasonably sized core.

attached are the frequency response plots and the inductance Vs. Current plots for various gaps.

dave
Attachments
AC signal was 100V @ 50hz (2W output)
AC signal was 100V @ 50hz (2W output)
Screen shot 2010-01-27 at 2.42.05 PM.png (40.26 KiB) Viewed 11463 times
Screen shot 2010-01-27 at 3.02.02 PM.png
Screen shot 2010-01-27 at 3.02.02 PM.png (30.22 KiB) Viewed 11463 times
jlsemrad
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Post by jlsemrad »

Is a somewhat larger core doable for a VT-52 SE? Are these C-core or EI?

Thanks,
John
dave slagle
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Post by dave slagle »

Of course. Two sizes up makes an awesome 8W unit for a 300B! Problem is that core size needs to be stamped and as nickel gets big, it gets heavy quickly so material cost goes up. With a little luck, in the near future i'll have some big 80% which I suspect will do a killer 4W unit for a 2A3 / 50 / VT-52.

They are all EI cores, and for nickel it doesn't really matter as much since the type I use isn't grain oriented.

Drop me a PM or email about the 1:1's I need to get you for the LCR phono.

dave
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deafbykhorns
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Post by deafbykhorns »

Dave, have you made these 80% yet? I changed my mind and decided on a 2a3 amp
dave slagle
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Post by dave slagle »

Listening to a pair as I type and I love them. Be prepared for the sticker shock though :-(

dave
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deafbykhorns
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Post by deafbykhorns »

I'm guessing about 40% more than the ones you quoted me ,5k8r 80ma nickel
BTW- need to order a pair of trannies this week. The curves looked much better than the japanese trannies. How's the low end on the 80%?
Are you driving those Khorns?
lanshan75
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Post by lanshan75 »

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