Active and Passive Crossover

[wan520i]

Dear ICE Sifus,Can I please have your comments and suggestions for my set up as below:I have 2 way electronic crossover & 4 channel amp, plan to use them for my 6 1/2 front components. 1. Can I set the Low Pass at 3000 Hz for mid bass? and use the HP crossover at the amp to cut at 60 Hz? Does this mean my mid bass getting freq from 60 Hz-3000 Hz?2. And can I set High Pass at the electronic crossover 2500 Hz for tweeter? 3. What will happen if I use the original passive crossover at the same time? passive crossver point for mid bass is 2500 Hz, and for the tweeter is 2000 Hz.Will the electronic crossover help to improve my sound system if settings as above? can I run active with it? Thank you very much for your inputs.