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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: I think one needs to take that quote with a big grain of salt... posted by mqracing on April 20, 2015 at 00:53:55:
I'm getting senile.I have what I thought are 441's with supposedly tertiary windings but IIRC the seller told me the primaries had a lower impedance of about 1650. Nice light blue potting cases, but no other id. Luckily I bought them before the Silver 7's came out.
Thanks for the info and crash course in dyna iron.
Funny that Dyna came out with those tertiary winding iron so late. I thought the whole idea of UL was to cut manufacturing costs by eliminating the fixed screen circuit as in Altec 340's, 350's and Allen organ amps which regulator tubes like OD-3's and such to power the screens.
UL transformers certainly paid off for Keroes and Hafler.
Edits: 04/20/15
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