sonotube noise help (1 Viewer)

[David_Lew]

Under high volumes and low bass, I notice my tube is making noises. I was wondering what this could be. I usually don't turn it loud enough to have this happen but when I do, it's quite annoying.

 

[Frank Kanyak]

It is possible that your maxing out the sub's excursion limit. Mine bottoms out at high volumes on Episode I pod race scene.

 

[Dave Poehlman]

What kind of noise is it? Where is it coming from?

 

[David_Lew]

Coming from the sonotube, not sure exactly where.
It's hard to describe, if I'm playing something with low bass, it's fine until I keep upping the volume and then it makes some noises so I let off until they're gone.

 

[Andrew Pratt]

It could be any number of things from the noise from the ports or the driver bottoming out or even the tube itself leaking air if its not sealed properly.

 

[Alexis]

It's your sonotube ringing. You need to dampen the walls more. You can wrap it with dynamat or the equivalent. I find sealed sonotube designs have more of a problem with this.

SVS laminates their tubes to reduce this.

 

[ThomasW]

Andrew's got the right idea.

Check for EVERYTHING for air leaks... Use the smoke from a cigarette while the sub is playing. The air leak will deflect the smoke.

BTW it's not the tube itself ringing. Sonotube has a resonant frequency that's out of the passband where the sub is operating.

 

[David_Lew]

Ok I tested it again just now. It seems it's too light.
If I sit on it (190lbs), there's no more noises. When I look at it, the whole tube is moving. O boy, it kicks hard too
I found my new message chair