Woodward Schumacher 68P086-1 Webcor Power Transformer 260-0-260 V / 6.3 / 6.3 V Tube Amp Tested 1960

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 reveal.   Made in USA around 1960. Weighs 4 lbs 5 oz. Bolt spacings 74 mm by 56 mm. 

This transformer originally powered some 12AX7s and two 6AQ5 output tubes.

A list of Sound By Doc standardized color codes can be found below.   Here are the verified connections for this transformer.

Input 117 VAC

outputs:
red to red/white pair 520 VAC @ 90 mA, center tapped with red/yellow

Brown to brown/white pair 6.3 VAC @ 1.1 A, center tapped with brown/yellow
green to green/white pair 6.3 VAC @ 1.3 A, center tapped with green/yellow

We use a standardized wire identification scheme featuring bright cable ties. In case of any ambiguity, 117V input will be wrapped with a black cable tie, red is high-voltage, yellow is 5V for rectifier, green is 6.3V, blue is 12.6V, white is 117V out for use as an isolation transformer or tubes with series heaters, purple is a second (or third!) 6.3V output.  

The voltages run a bit higher when run at modern AC levels instead of the 117 VAC that was specified in the 1950s and 1960s.