flapping noise out of port?

[Lucky 76 5]

my friend and i made a ported box with 2 separate chambers ... 1 chamber for each sub ... each has its own portl .... for some reason in one of the chambers a flapping noise is coming out of the port ... the other sub seems fine and no flap is coming out ... each sub is wired independently as well ... we took the sub out and vacuumed the chamber and the noise is still there ... what could this be? ... is it possible that there is something wrong with the sub causing it to flap? .... the noise fluctuates with the frequency ... ex lower frequency will create a harder slower flap

[sqjeep 9]

my friend and i made a ported box with 2 separate chambers ... 1 chamber for each sub ... each has its own portl .... for some reason in one of the chambers a flapping noise is coming out of the port ... the other sub seems fine and no flap is coming out ... each sub is wired independently as well ... we took the sub out and vacuumed the chamber and the noise is still there ... what could this be? ... is it possible that there is something wrong with the sub causing it to flap? .... the noise fluctuates with the frequency ... ex lower frequency will create a harder slower flap

if both ports are built excatly the same the only thing i can think of is its the tinsel leads on the sub slapping.

[Duran 387]

It sounds like your port is broken, or coming loose and slapping.

[KU40 173]

What are the specs on the ports and box, and what subs are they, what amp? Is this the first time you've used the subs?

[Lucky 76 5]

What are the specs on the ports and box, and what subs are they, what amp? Is this the first time you've used the subs?

it is a 1.4 cubic ft box tuned to 28hz ... 1 inch width by 12 inches for the port... bxi2006d amplifier ... the subs were in my car but in a sealed so i couldnt tell

[jcarter1885 995]

the best way to tell if its the sub or box, just swap out the subs in each box and if the same box is still making a flapping noise then rebuild it or whatever; if the other box makes the noise then you know its your subwoofer

[kirill007 52]

you could look if the port or another panel is loose, that could cause the noise.

[Lucky 76 5]

the best way to tell if its the sub or box, just swap out the subs in each box and if the same box is still making a flapping noise then rebuild it or whatever; if the other box makes the noise then you know its your subwoofer

thats what we are going to do ... just wanted to know what else it could be if that wasnt it ... thanks

[Lucky 76 5]

so i guess the sub was bad ... we took it out and now we have just one sub running ... now the other sub is doing it ... the amp is a hifonics bxi2006d ... it is running unclipped at 1900 watts at 1 ohm .... the subs are pioneer premier ts-w3002d4 ... is it possible that even tho these subs say they are rated for 1k rms that they only really handle less? ... i smelt the sub and it smells burnt even tho it is hitting like normal just with an annoying flap