line driver or cross over

[P2KMax 0]

a buddy of mine told me to add the 2 i never used none of them he said that they will help my 15's hit harder

[helotaxi 46]

Your amp should have a crossover built in. No point in adding a second one. As long as your gain is set correctly, and the amp is making full power with the HU, there is nothing that a line driver will do for you either. Your friend is misinformed.

[///M5 2,833]

I also don't see the value in either one.

[Lord Baccus 1]

my 0.2 cents:

get a better HU