I ran across
www.palomar-engineers.com. It never accorded to me to e-mail them though. I will go ahead and do that and also amidon, although I think it talked to some one from amidon already.
For formula I use: "The current in the resistor is simply I = V-resistor/R
Also I= V-inductor/(2*3.1415*L*frequency) = (V/2*pi*F*L)", for frequency I was told by the desinger of my x-over to use 200 Hz and also to use that 12 gauge wire. The resistors are to 1% tolerance 20 ohm resistors wired in parellel to give me an even more accurate 10 ohm, I figure.
I'd like to use CRGO steel laminations for the core I think. It's just obtaining them at a reasonable price that's the problem. I already ordered the wrong cores twice from bytemark.com. I don't want to pay $50 for a set of EI steel cores that might not even work.
Anyway thank you for your help I will e-mail those companies and take a look at the link that shows how to measure inductance. Never hurts to double check if I got the right inductance on my other 10 air core inductors. Which were a piece of cake and turned out beautifully, by the way. Inductances of those: .5, .7082, and .9 mH.
Can you post pictures on in this forum, if they're not URL? Maybe some one could tell me why the inuductors I made out of steel laminations I got out of 2 washing machine motors has an inductance of .08 mH and I could go from there.