Fully 60 Hz AC tested and guaranteed vintage tube preamp transformer. AC testing using an oscilloscope allows us to find and reject transformers with noisy outputs, which a simple resistance or continuity test will not show reveal.   Made in USA in 1961. IEA date code 1005128. Weighs 2 lbs 3 oz.

This transformer originally provided heater current and high voltage HT B+ for 4 12AX7, a 6X4 rectifier, and a EM84 indicator tube in a Webcor preamplifier.

in:

black, red/black 115 VAC

outputs:
red & red/white pair 580 VAC,  Center tap is red/yellow

yellow pair 200 VAC

green pair 6.3 VAC

brown pair 12.6 VAC

The voltages run a bit higher when run at modern AC levels instead of the 115 VAC that was specified in the 1950s and 1960s.

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Listed4 years ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
  • Northlake
Model
  • Webcor 68P107B Tube Preamp Filament Power Transformer PT 6X4 12AX7 EM84
Categories
Year
  • 1961
Made In
  • United States

Product safety information may be available here.

Sound by Doc

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