tRiGgEr 5,000+ posts
CarAudio.com Veteran
Ok I have a 12" xxx in a 2.5 cubic foot box tuned to 30hz. And my port has 33.75 square inches of port area.
On certain notes my sub moves a lot and there is a fluttering sound coming from the port. If I place my hand by the port a crap load of air is moving threw the port. Yet the bass sounds muffled and there is that fluttering sound coming from the port.
Is this just port noise due to the port area being to small? If not what causes this? Maybe playing a certain frequency?
Please help fellas.
On certain notes my sub moves a lot and there is a fluttering sound coming from the port. If I place my hand by the port a crap load of air is moving threw the port. Yet the bass sounds muffled and there is that fluttering sound coming from the port.
Is this just port noise due to the port area being to small? If not what causes this? Maybe playing a certain frequency?
Please help fellas.