On my Hifonics amp the crossover is set to HPf Both of them So their set for Highs I think... THats why i say im confussed...Their is also a line out on the amp will take more pics for u later if u need them let me know...
Also try to turn of the x-over on the amps, your HU should be able to control that, but go gentle on the volume, don't let the speaker clip.
D.
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. My system may not blow your ears, but it will sweeten your senses. CLA 250, 4MATIC