As said above, the 'resistance' that you measure with your ohm meter is in DC, i.e. direct current. Impedance is an entirely different measurement that uses an alternating current (The music signal happens to be just that, AC). It might like understanding the horsepower of a car. The stated horsepower isn't exactly what you will be experiencing in driving, at least considering differing speeds, roads, driving habits, etc. It gives a baseline for you to consider.
Measuring impedance with multimeter
I am measuring a new full range speaker impedance that is advertised as 12 ohms and I am getting a consistent reading of 4.2.
I checked the multimeter on another bookshelf speaker advertised as 6 ohms nominal and I get exactly that.
I am using a multimeter at the speaker leads not connected to amp.
Why is this reading so low?
I checked the multimeter on another bookshelf speaker advertised as 6 ohms nominal and I get exactly that.
I am using a multimeter at the speaker leads not connected to amp.
Why is this reading so low?