In a speaker crossover, are film inductors directional or have polarity?

If you're referring to foil inductors, then they do not have polarity.  You can hook up either way it should be fine.

Thank you all... I was refering to foil Inductors, my mistake.

     As mentioned: you must be referring to film capacitors, as there are no film inductors.

    You’ll find your answer here:

https://audience-av.com/a_applications/

     There are FOIL inductors, to which you may be referring.     Their orientation makes no difference, far as noise or inductance value.

I think you mean film capacitors.  While they usually aren't directional, often it is seen as better to hook one end to positive.  they are usually marked by a long lead or a mark established by the OEM. 

Jerry

As a general rule of thumb, speaker x-overs don't have polarity. Are we speaking about active or passive x-over?