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- - Horn speaker/ crystal radio (http://www.videokarma.org/showthread.php?t=277822)

radio nut

10-01-2026 12:38 PM

Horn speaker/ crystal radio

Hello, is it possible to use a crystal radio to run a horn speaker?

mrjukebox160

10-01-2026 05:12 PM

Not without adding an amp.

radio nut

10-01-2026 05:48 PM

The horn speaker is 1275 ohms. Do I need a special amp?

Electronic M

10-01-2026 06:12 PM

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.

radio nut

10-03-2026 03:50 AM

What kind of amplifier without power. I am guessing a transformer? If so how do I find one?

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