Measuring Speaker Impedance
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Joined: Mar 2002
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From: East of Philly
Measuring Speaker Impedance
For reference...
Since you CANNOT take a multimeter and measure any speaker's impedance (4 ohms, 8 ohms etc.) with it, I'm including some info on how to do it, or how it's normally done.
The multimeter method will only give you the speaker's resistance at DC, and we know DC has little to do with music frequencies of 20Hz-20kHz. The true impedance is an average measurement of the speaker's impedance across the whole frequency range.
See links below:
http://www.prosoundweb.com/article/m...z_with_an_rta/
http://www.analog.com/media/en/techn...7846AN_843.pdf
Jerry
Since you CANNOT take a multimeter and measure any speaker's impedance (4 ohms, 8 ohms etc.) with it, I'm including some info on how to do it, or how it's normally done.
The multimeter method will only give you the speaker's resistance at DC, and we know DC has little to do with music frequencies of 20Hz-20kHz. The true impedance is an average measurement of the speaker's impedance across the whole frequency range.
See links below:
http://www.prosoundweb.com/article/m...z_with_an_rta/
http://www.analog.com/media/en/techn...7846AN_843.pdf
Jerry
Thread Starter
Joined: Mar 2002
Posts: 2,747
Likes: 15
From: East of Philly
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Joined: Apr 2020
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From: NY
For reference...
Since you CANNOT take a multimeter and measure any speaker's impedance (4 ohms, 8 ohms etc.) with it, I'm including some info on how to do it, or how it's normally done.
The multimeter method will only give you the speaker's resistance at DC, and we know DC has little to do with music frequencies of 20Hz-20kHz. The true impedance is an average measurement of the speaker's impedance across the whole frequency range.
See links below:
http://www.prosoundweb.com/article/m...z_with_an_rta/
http://www.analog.com/media/en/techn...7846AN_843.pdf
Jerry
Since you CANNOT take a multimeter and measure any speaker's impedance (4 ohms, 8 ohms etc.) with it, I'm including some info on how to do it, or how it's normally done.
The multimeter method will only give you the speaker's resistance at DC, and we know DC has little to do with music frequencies of 20Hz-20kHz. The true impedance is an average measurement of the speaker's impedance across the whole frequency range.
See links below:
http://www.prosoundweb.com/article/m...z_with_an_rta/
http://www.analog.com/media/en/techn...7846AN_843.pdf
Jerry
Z's are usually 1kHz outputs, etc.
Lots of meters these days are a random slew of this/that test functions; V, A, Ohm, diode, continuity, Z, cap, inductor, temp, some even have light meters and thermocouple jacks, etc etc
But yeah, std ohm test using DC is not valid for a speaker impedance test.
$129 for that Dayton test thingy?? Nah, buy a LCR meter instead, they are all typically LCZ meters because they use 1kHz for the "R" setting
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