I'm in the proccess of creating a program that will generate crossover circuits for testing in Spice. You just select the drivers, crossover style, frequency, lpad, .... and out pops an aimspice file with everything set up, all you have to do is open, click AC and click run.It is coming along really well. I should be done in under 2 weeks.
Here is some sample output
This will prove to be a very useful tool for anybody.
I'll post the program soon.
Danny