after you check the polarities on your speakers, make sure your amp is set to low pass and the crossover is set to around 60-70 Hz.

My rear deck speakers made a terrible popping noise at high volumes when i had the crossover set wrong. As soon as i set the crossover right it made a world of difference.

 

sorry to bring up a old post... but i had a quick question about my upgraded system. the 1 kicker l5 i had was nice but i wanted more thump. so i built and carpeted a box for 2 12's. 13x32x18... i have 2 kicker subs hooked up to one mono amp. one kicker is dual 2 ohms, and the other is a dual 4 ohm. so i wired one down to output 1ohm and the other 2ohm. and i ran these in series. is this ok for the subs and the amp? i know wireing it in parallel wouldnt work...

 

NO! You cannot use those two subwoofers together, no matter how you wire them. True the amp will see a stable 3 ohm load. However the 1 ohm subwoofer will receive twice the power of the 2 ohm subwoofer. Not what you want..... And down right disastrous if they're in a common chamber box. (Which I bet they are)

 

ok thanks for the reply man. but are you sure its the 1ohm sub thats gona recieve the most power? cuz it seemed like the 2ohm one was hitting harder.. and na i built them seperate chambers..

 

The dual 2 ohm wired in parallel to 1 ohm will receive twice the power of the dual 4 ohm wired in parallel to 2 ohms.

 

ok thanks.