Doubt about coil (inductor) and capacitor!

I currently have a Fostex 925A super tweeter that is connected with a Mundorf Supreme 2.2uf capacitor and a 1.5mH coil, resulting in a 9khz cut!
My doubt, if I want to cut at 14khz (Capacitor 1.5uf) can I keep the same 1.5mH coil or do I have to change it for a coil of another value?

(I apologize for my bad English. This has already caused me a lot of problems, so I hope you'll check with me if anything seems totally crazy or offensive!)