Symptoms of a leaky sealed box

[GrnEydDvl 10+ year member]

I have a sub/box that used to work really well and now it just does not seem to get as loud or handle the power as well as before.

I believe I may have a leak somewhere - possibly from removing the sub and unscrewing the mounting screws so much that the screw holes are semi-stripped.

What would you expect from a sealed box that had somehow sprung a small leak?

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[yacob.naif 10+ year member]

if you press the cone in, it should push relatively easy, but then pop back out SLOWWWW

and if you play it really hard for a few minutes, and then pause the music, the cone will slowly travel back to it's resting position

 

[thejoker989 10+ year member]

Play a low frequency test tone ~25 hz and dont play it too loud and listen around the box for leaks. The reason you want to use a low freq is so it does not make a whole lot of noise drowning out the hissing noise.

 

[samson 10+ year member]

I'm on my first sealed box. Had a problem with mine a while back. I thought the sub was busted. Got a funky vibrating sound. Went overkill on the caulk and all is good.

Could never tell a difference on a ported box. I had holes where I ran the wires and closing those made no difference at all.

 

[GrnEydDvl 10+ year member]

Thanks for the suggestions on how to tell if I have a leaky box.

How would you expect it to perform while playing if the box was leaky?

 

[skmfkr 5,000+ posts]

20hz + like half vol is what i would do

 

[snoopdan 5,000+ posts]

A major symptom of a leaky sealed box is finding a pile of db's on your floor....//content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[Raven 10+ year member]

A good counter for stripped screw holes on the baffle is T-nuts. You can buy a set of 8 for very cheap on Realm of Excursion.

 

[Chevyaudio 5,000+ posts]

A leaky box will have a clanking noise to it, almost like the sub is bottoming out.