I'm finishing up two pairs of special construction B7-10k:10k "Series Mexico" input tranneys. One pair with pure silver primary and secondaries the other pair made with copper. Both are stacked with high nickel (80%) laminations. Both are very trick with several proprietary optimizations.
Excellent for use as as an inductor loaded volume control--- and we have a few of the high precision Penny & Giles RF-15's in stock.
The silvers are spoken for and that commissioned work was the basis of these Series Mexico designs. The copper pair is available for sale. Please send inquiries to email@example.com
see link below for pics
Builder of MagneQuest & Peerless transformers since 1989
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Topic - preview: series Mexico B7 input transformers - mqracing 02:11:39 04/02/15 (0)