How does one measure the impedance of speakers?
This is not a clear cut answer. First of all, the impedance will not match – and its not that important. The NOMINAL impedance of a speaker is just that – nominal. It will change in each room setting, in each enclosure, even with the relative humidity. Unless you have an old tube-type amplifier, and the voice coils on your new speakers have one turn (very unlikely), then you can generally not worry about it. However, to be safe, measure the DC resistance across the terminals. If it is greater than about 4 Ohms, you should not have a problem with even the most touchy amplifier or receiver. Impedance of a speaker will change with frequency. The better the speaker (generally) the less the nominal impedance will change in any given situation. (more info) [Top] Why was my original dustcap different from the one you used in my reconing or sent with my DIY refoam kit? Not all the same size or same material dustcaps are still available so we must use what is currently available or what we feel
