well first off i have 2 kicker L5 subs with the kicker Sub enclosure and they said when i calll tech supp. the the box was tuned at 42 hrz and i have a 98 buick centurey and i my box fits it dont take up too much space at all and it is ported and i have a 900 watt amp kicker zx and i have pioneer indash,,,, i was wanting to know why does it sound like it is not just hitting right like i have had some re's memphis and kicker comps and it just dont sound like it is doing what it is suppose to oh they r wired at 4 ohms at the boxes termnilals and 4 ohm stable amp all so i just know that it will hit harder because i have hurd it in a suv and it bangs hard so will pollyfill help they had allready had it in my box when i received the stuff in the mail i just thought that it was packing stuff that they had to protect the speakers and i didnt know untill someone told me about pollyfill so will it make my bass sound better i just want them to slap me in my face and hit harrrrrrrrd if yall know what i mean i have spent over 1500 dollars on all kinds of stuff and i am tired of messing with what i need to get next to make it sound better.... and another question will pro bass box help or make it the same or is the kicker box just as the same pleeeeeaaaassseeee hellllllllpppp....... quickly.......thanks.... u can email me even at [email protected] zx amp 900 watt rms and 4ohm dvc wired at what kicker wired them at it sayd at the end of box on the Termninal cup 4 ohms and thats it now will some one pleaase help