what DSP you fix? if got DSP no need crossover. but need tuning. since you ask these questions. better fix at shop.

EDIT : DSP got 2 types. standalone DSP which need help from AMP to power or DSP with AMP. for Example Helix V EIGHT DSP MK2 have amp built in and Helix DSP PRO MK2 need amp to help drive the speakers.

This post has been edited by isildur88: May 17 2020, 12:58 PM

im not a pro bro. others can give much better advice. but my own setup runs from HU > DSP > AMP > Speakers. from what i know(pros please correct me if im wrong) DSP is a crossover with more features. but since your DSP has no amp. it needs amp to run. can refer to the diagram below.