Ok now I have two ten inch eclipse subwoofers underneath the rear seat of my 2004 qc...they have adequate power...but when they hit on certain frequencies or bass the subwoofers sound like they are burping...WHY???

 

How watts are the speakers rated for and how much does your amp put out? Are the regularly connected or bridged and how big of an enclosure are they in? Or are they in an enclosure?

 

Burping or popping sound? Are you running a straight amp or are you running an equelizer? If you are running an eq. try adjusting the first two settings all the way to the left.

Is this a new system/speakers? What is your distortion rating on the amp? Are the speakers the correct ohms? Does this just happen when you play CD's or does it happen with the radio? What is the origination point of the music, downloaded or store bought? Is there a pattern? Specific parts of specific songs?

Sounds to me like too much distortion. Check the distortion rating of your amp, it should be .01% or lower, make sure speakers are the correct ohm rating for your amp, I THINK subwoofers would be around 2-4 ohms? Review the quality of the music source(CD,MP3 etc.) reduce your bass/EQ settings.

 

Bigman, need more info on your setup....

type of amp? wattage - max and rms? mono block or 2 channel? ohm load amp can carry? How are the speakers wired? series or parallel? series increases ohm load reducing acoustic output but taking demand off your amp while parallel decreases ohm load but increases power demand on your amp.

Not sure of a burping but two things come to mind - cones are slapping either from too much power or the speakers are wired backwards causing the speaker to go in instead of going out
or
you do not have enough air space for the speakers. You might try porting the box with an 1 1/2" port. You used to be able to buy ports at Radio shack.

 

what kind of deck do u have because sometimes if there is to much bass it will cause clipping idk if thats it

 

it means that that is your subs max right there. you are pushing it to the max. glad that its making that sound than a popping sound meaning you blew it... what is the RMS and MAX? if the RMS is matched up fine for your sub, then your in the clear. if the amp's max is less than the subs max, then thats why its making that sound. you dont have to worry about it. its just something all subs do. even my subs do it and they have more than enough power... guaranteed. collision, it is definitely not the deck. the deck doesnt have anything to do with the burping. its all about the wattage. stump, airspace is not it. plus, ports dont add airspace, they just add dB.they airspace is still the same with ports. But anyways, dont worry about that sound, it is just telling you that the sub is at its very max and that if it was pushed extra wattage than what it is getting, then it would blow, so stay away from putting the volume that high.

 

Never said ports add airspace. They tune the subs and that could fix it's "dead" freaquency depending on the length and size of the port.