Chicago Standard BO-14 100W outputs - diyAudio
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Old 5th August 2004, 04:48 PM   #1
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Join Date: Apr 2001
Location: Milwaukee, Wisconsin
Default Chicago Standard BO-14 100W outputs

Before I put these on e-bay anyone interested? I have three.
One is NOS no rust but a few minor scuffs. One NOS just a little rust starting. One is used and rusty. Buy two and get a spare.

Chicago super range BO-14 output transformers

100 Watts 5000 ohm primary with screen taps. 10% tertiary winding for cathode coupling! 8, 16 and 70.7 v secondary. BIG Hermetic Macintosh style cases. 21 pounds each. Use 4 tubes and get 2500 ohm primaries with 4 and 8 ohm taps.

I have an article that goes with these to make some excellent 100w pentode w/ cathode feedback or 40 watt triode w/ cathode feedback. Shows specs, theory, schematics.

Selling because I bought these then found the ones I really wanted, Dynaco A440's
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Old 10th August 2004, 04:25 AM   #2
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