Low Frequency Response From Car Audio Question?

SeanL

Member
Hey, I have fair knowledge in car audio and take pride in my work but sometimes rush things.
My question is, I have four Kenwood speakers i usually hit them with 150-200 Hz and four 6X9's behind the head rest that i want to hit with lower hz but what i dont understand is all im getting out of them is minimum bass, I am running a KAC-8405 for my speakers so tuning is a prioirty, When I sit in a pontiac sunfire evan, I can feel the speakers shaking the door to evan a mirrior with a fair listening bass for speaker response, I feel like my speakers should sound amazing all im getting is loud highs what options on this amp should be adjusted for best performance?
LPF (low pass filter) On Off?
Hz 50-200 50?
Input sensiv 1?
Bass Boost off or on?
Help me out with what you can heres a pic
http://www.sonicelectronix.com/pictures_new.php?id=22573&picture_id=380791
 
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