Sourcing a field coil speaker...

[Reece]

The radio in the Radio Attic Archives has a PM speaker in it. As stated, almost anything from around 1946-47 and on, which includes your radio, would have a PM speaker. Consumer radios weren't built during the war. In 1946 or so when they started making them again, the manufacturers used up whatever stock they could find, the demand was so great. That's why you'll find some radios from that era with field coils and some of the same model with PM's, or with varying tube numbers within the same model. But the one in the Archives picture is definitely a PM speaker. There are only three wires coming from the speaker plug. There would have to be more wires if there were a field coil involved. The three wires from the plug go to the speaker transformer, and then two wires from the transformer to the voice coil on the speaker. Use any 6" PM speaker. It looks like there would be room for an 8" speaker in that cabinet, which is what I would use. It would be better to cut the speaker board larger, but if it's too much trouble to take out, the 8" would still sound better and give even better bass than the 6". Might have to put a deeper front cardboard or other gasket on it to space the cone out from hitting the board. Nice job on the radio!

Reece