Ghost face Max

I'm a newbie on stereo installations.

I have a simple question because I'm not really sure.

I have a lanzar crossover and a amp on the way and they both have bass controller units that I can install.


My question is which bass controller unit do I install the one that comes with amp or the one that comes with the crossover????????

I just need to know so I'll know which one will be more effective!


Any help on this would really be appreciated!

Thanks!!!!