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My question, for anyone who was an old timer ham radio operator or SWL'er, is why were the external speakers so large? The size of this puppy is much larger than would be needed for a single person to hear.
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I asked one of the oldtimer Hams here...He said that a lot of the pre 1960 radios had high fidelity audio circuits in them and sounded great through a large speaker. Way back when there were the horn speakers. These were basically a larger version of a head phone transducer with a horn on top. The operating impedance of them was all over the place depending on who made them but they were all high impedance like 1200 to 2000 ohms. These don't sound great but they do have a unique sound.
Hopefully other will be able to add some more insight.
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