Hi this is a bit off topic sorry feel free to junk this guys.

I have a ls51kt legacy cross over and speaker set with the 5.25 speakers and one inductor is bad as well as a blew cap.

I would like to scrap the iron core inductors as I dont like the saturation they produce maby foil or air core.

How can I determine the value of the inductors that legacy used? or can someone help me figure an acceptible replacement for this again sorry about the ot post but you guys seem th be the best on the web for electronic knowledge thank you verry much in advance    Mike.

I believe I have asked this before and unless you have the proper equipment, you can't.

Hopefully someone will prove me wrong and provide a way of measuring inductors easily using low cost means.

Who makes the Legacy? Maybe an easier way is to contact the manufacturer.

One way is to use an RCL bridge... but that expensive.

Another way is to make a parallel resonant circuit and find the centre frequency.  But for this you need a good selection of caps and a signal generator capable of generating a wide range of frequencies.

...and even then it's a difficult to be accurate.

if you know of any place that does electronic servicing, try dropping in and asking them a favor...

Speaker impedance?
Crossover slope?
What's the value of the bad cap?
What crossover freqency or bandwidth are you aiming for? (what kind of filter is it?).
How much power is used?
These and probably a couple other things I can't recall offhand.

Do you just want to get it back up and running, you know, just sort of a "ballpark' figure and fine tune it later?

I'm guessing something around a 1 mH range but it depends on so many other factors.

I came across an easy method a while ago.  It used a simple circuit in conjunction with a multimeter.  Didn't work with the meter, but did using a scope and I got a good approximation for what I had.

Don't have the link, but if you google 'measuring inductance' you should come across it.

AC circuit, wiht inductor as only load and measure current through....

shouldn't this work?

im sure there's a way to relate inductance to current, as this is part of the defenition of impedance...

http://et.nmsu.edu/~etti/fall96/electronics/induct/induct.html