Flapping sound

[KMS 10+ year member]

so when the box is loaded, the sound occurs? i say loose box panel. shouldn't matter about the amp.

It's a sub up port back and the sound is coming from under neath the sub on the top right side. It looks fine but the noise is bothering me.

 

[KMS 10+ year member]

so when the box is loaded, the sound occurs? i say loose box panel. shouldn't matter about the amp.

It's a sub up port back and the sound is coming from under neath the sub on the top right side. It looks fine but the noise is bothering me.