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Philco 90 (Early) Speaker Diagram
Nathan Slingerland
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#1

11-08-2015, 06:26 PM
For reference, attached is the wiring diagram for the early Philco 90 with push-pull 45 output tubes:

.pdf Philco 90 Early - Speaker Diagram.pdf Size: 72.02 KB  Downloads: 175


The page in the tech section on Philco 20/70/90 speakers is very helpful but only has the diagram for the single-ended output versions:

http://www.philcoradio.com/tech/speaker.htm

The wiring on my 90 was pretty mangled, so it took a bit of tracing of the schematic to figure it out.
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration