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Author Topic: Speaker with resistor to create proper load?  (Read 165 times)
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If I have an audio speaker signal that is rated for 1 Watt @ 32 Ohms, is it safe to wire a 1W/8 Ohm speaker with a 24 Ohm resistor on one of the speaker leads?

SIGNAL SOURCE ------|24 Ohm Resistor|-----SPEAKER +
SIGNAL SOURCE ------------------------------SPEAKER -
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If your source can drive a 32 ohm load and you connect it to a 32 ohm load it will be OK.
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The best way how to connect the 8ohm speaker to 32ohm output is via an audio transformer with 2:1 winding ratio, thus you will not loose 2/3 of your power there..  smiley-razz
« Last Edit: March 29, 2014, 03:00:52 am by pito » Logged

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Or if it's a square wave output, build a little buffer amplifier using a transistor.  A 2N2222 would do a fine job.
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