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hipp82
06-03-2007, 01:35 PM
I have a pair of custom x-overs out of a pair of speakers. I know PE part # 390-513 will be able to measure the inductance and capacitance, can I also use it to measure the x-over points?

Adrian
06-03-2007, 01:52 PM
If you can find out the values of the components, then go here: <A HREF="http://www.parts-express.com/resources/xover.html">http://www.parts-express.com/resources/xover.html</A>
you can use the schematics at the bottom of the page to figure out where in the circuit a particular component goes and the use that to find the matching value in the tables at the top of the page. From there, you can back track to the crossover point. If the values are outside of the range of the tables, look for a value that is 10X higher or lower and then move the decimal on your crossover point appropriately (its all directly/linearly proportional).

HTH,
Adrian

Dirk
06-03-2007, 03:08 PM
> If you can find out the values of the
> components, then go here:
> <A HREF="http://www.parts-express.com/resources/xover.html">http://www.parts-express.com/resources/xover.html</A>
> you can use the schematics at the bottom of
> the page to figure out where in the circuit
> a particular component goes and the use that
> to find the matching value in the tables at
> the top of the page. From there, you can
> back track to the crossover point. If the
> values are outside of the range of the
> tables, look for a value that is 10X higher
> or lower and then move the decimal on your
> crossover point appropriately (its all
> directly/linearly proportional).

> HTH,
> Adrian

Well, to be accurate, you'll also need to know the driver's impedance profile, as well. The Woofer Tester would allow you to test the components AND get the impedance of the woof.

Adrian
06-03-2007, 03:57 PM
It says so in the link, but thank you for pointing that out.

cheers,
Adrian