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Old 27th July 2007, 04:12 PM   #1
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Default reverse calculate inductance

I have a PA cab that i like which is no longer in production . I want to build a couple more.

I have found drivers that are replacement parts for this model but now i need another crossover or 2.

I have tried a couple of off the shelf XO's and i like this old one better.

I have the caps i need but the inductors arent marked.

Can i get a Capacitance/Inductance meter and measure "In Circuit"?
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Old 27th July 2007, 04:52 PM   #2
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Sorry for the misleading title. I was originally going to ask if i could get inductance figures by plugging cap values and XO frequency into a crossover calculator and get the values i need.
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Old 27th July 2007, 07:38 PM   #3
Pano is offline Pano  United States
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I think you could only calculate the inductor value if you really know the frequency and it's a textbook design and you know the filter type.

Some clever person here may be able to tell you how to test the values in circuit, but I would just desolder a leg and measure with an inductance meter.

That isn't much help, is it?
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