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Compare meters between analog and digital @Wi-electric When measuring speakers with these two types of meters, what are the differences? I see everyone likes to use digital. The needle is also good. Impedance value is the resistance value to the frequency signal of the speaker's voice coil. The audio frequency is between 20Hz - 20KHz. You will see that the frequency when the frequency passes through the speaker, when the frequency is different, the resistance is also different. The unit of measurement of impedance is Ohm. Multimeter sanwa YX-361TR multimeter digital sanwa CD800