This is true, the voice coil will usually have a lower resistance than the impedance rating. The rated impedance is often the average impedance in the intended bandwidth. Something to remember is the speaker's impedance will be different at various frequencies but the DC resistance is the lowest it will ever be. For this reason using an ohm meter is a good way to determine whether an amp will work with a particular speaker.

It should also be said that cheap meters are not accurate when going below 4 ohms or so.

 

There is no arguing the facts here, but even a cheap multimeter can do the job the OP needs done

 

So now I just buy any crossover and hook it up as though they r two separate speakers correct?

 

No, not really... A passive crossover has a preset (if you will) crossover point and slope. Depending on the drivers, it can take a while to find a passive xover that will suit. You could make one, but that is a whole other ball game that can be solved by going active. An active system gives you the freedom to change both, and usually on the fly. All you really need to do is meter the drivers to make sure whatever amp you are using to drive them is capable of driving the load safely

 

Oh yeah that's what I meant... A crossover before the amps

 

Most amps give you the ability to use it as your active xover. That all comes down to the amp itself tho. Depending on what you need for a xover, you may not even need to purchase a seperate component

 

Not too many amps these days have built in crossover settings high enough to use for a tweeter. Pickup a simple 2way electronic crossover and go from there.

 

^
Good call

 

Does anyone know where I can get a crossover for the components? All I can find online are crossovers for subs. Oh btw an active crossover

 

Coustic are my favourite - xm4 or xm6. Audio Control makes excellent crossovers too.