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  #1  
Old 10-01-2026, 12:38 PM
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Horn speaker/ crystal radio
Hello, is it possible to use a crystal radio to run a horn speaker?
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Old 10-01-2026, 05:12 PM
mrjukebox160 mrjukebox160 is offline
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Not without adding an amp.
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Old 10-01-2026, 05:48 PM
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The horn speaker is 1275 ohms. Do I need a special amp?
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Old 10-01-2026, 06:12 PM
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If you have a strong local station it's possible to have a crystal radio with an amp that doesn't need a battery or AC supply. Some crystal radio guys build 2 radios.... One harvests a few volts of power from the local high power station to power an amp or regenerative stage and the other tunes the weaker stations for the gain stage.
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Old 10-03-2026, 03:50 AM
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What kind of amplifier without power. I am guessing a transformer? If so how do I find one?
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