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<blockquote data-quote="Death By Bass" data-source="post: 2180939" data-attributes="member: 566959"><p>the nominal impedance of a speaker is not the same as its DC resistance.</p><p></p><p>impedance is frequency dependant and is an AC measurement.</p><p></p><p>when you measure a speaker with a multimeter, you are measuring its DC resistance, which will be lower than the drivers given nominal impedance.</p><p></p><p>in reality, a "4ohm" speaker, may have an impedance anywhere from 2 ohms to 20 ohms, depending on the driver itself, the frequency, aswell as the enclosure its in.</p><p></p><p>if you were to wire all 4 coils in parallel, to give a theoretical 1 ohm load, in reality, you'd have a 0.625 ohm resistance, which will more than likely be present to the amplifier at certain frequencies, and may cause it to go into protect.</p><p></p><p>you'll have to try it and see.</p></blockquote><p></p>
[QUOTE="Death By Bass, post: 2180939, member: 566959"] the nominal impedance of a speaker is not the same as its DC resistance. impedance is frequency dependant and is an AC measurement. when you measure a speaker with a multimeter, you are measuring its DC resistance, which will be lower than the drivers given nominal impedance. in reality, a "4ohm" speaker, may have an impedance anywhere from 2 ohms to 20 ohms, depending on the driver itself, the frequency, aswell as the enclosure its in. if you were to wire all 4 coils in parallel, to give a theoretical 1 ohm load, in reality, you'd have a 0.625 ohm resistance, which will more than likely be present to the amplifier at certain frequencies, and may cause it to go into protect. you'll have to try it and see. [/QUOTE]
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