Quote:
Originally Posted by JohnnyCrash
Next time you get a speaker, measure it.
For instance my Eminence Tonkerlite is labelled at 8 ohms, buit reads at 7.8ohms. My Jensen Neo 12-100 is labelled 8 ohms but is 7.1 ohms. My "8 ohm" Jensen RI P15N is actually 6 ohms...
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Actually, what you are measuring is DC resistance,
not impedance. Impedance is frequency dependant, and for any given speaker varies considerably throughout the speaker's usable frequency range, with a peak at the speaker's resonant frequency. The stated impedance of a speaker is always a nominal value, an approximation, as it were.
Bob Arbogast