the signal no longer send very low frequency stuff, so yeah clearer output for mid and high range, this doesn't matter much if you have good amp.
Bass unit no need to produce very low range frequency, so it could focus on producer higher bass frequency sound

for kenwood and jvc, you have this settings to filter out low range frequency, e.g if you choose 150hz, 0-150hz will not be send over front/rear speaker wire.


here a better settings explanation.
http://manual.kenwood.com/ce/im362/Asia_Au...M_en_00-14.html

This post has been edited by zerorating: Nov 13 2020, 12:34 AM

no la, i am someone who not prefer bassy setup or someone targeting more treble sound
all my car speaker handle all those frequency range, so there is tuning being made.