sub box is leaking air

[dben]

When I made my sub box, I guess I didn't seal it well enough on the inside, becuase I still hear some air leaking out. Is there something I can coat the outside of my box with to seal it all up? I also have plans to coat it with some black paint, but I don't think that would seal it very well.

[Mike]

take out the sub and seal it up better on the inside?

[dben]

Oh i thought there was a way of just sealing it on the outside, since that would be easier than taking out all the poly fill and stuff like that.

[TypeG]

liquid nails. later.

[90LXproject]

When you built it you didnt by chance use nails instead of screws did you. If so the bass will eventually back the nails out. Either way you need to just go ahead and pull it out and reseal the inside. I like the Liquid Nails idea.Dont use any sealant on the outside it will show and unless you want to cover it with carpet you will end up seeing it, even under black paint.

[dben]

I used screws and wood glue. I just used up all my liquid nails so i'll have to go with some silicon.

[dben]

did you read the first post?

[93twodoorLX]

wrap the inside of it with dynamat, or at least do the cracks and edges

-sean

[Cletus Vandamn]

I dont know where you guys learned how to build boxes but nails are perfectly fine. Its not the nails or screws that hold the box together, its the glue!!!! If you have properly glued a box together the joints will be stronger than the wood itself.

[mondojackal]

I dont know where you guys learned how to build boxes but nails are perfectly fine. Its not the nails or screws that hold the box together, its the glue!!!! If you have properly glued a box together the joints will be stronger than the wood itself.

i dont know if you've ever been around some high xmax subs, but if you use nails, the box will literally split apart when it hits hard...the pressures are just too high, thats the same reason you need to use MDF, rather than regular wood..

[mondojackal]

liquid nails. later.

either that or titebond wood adhesive and put multiple layers on there

[Cletus Vandamn]

I am a MECP certified and I am around high power systems all the time. Again, nails are fine because the only holding they do is while the glue is drying. After the glue is dried you could take them out and it wouldnt effect how the box is held together. When I was getting certified we built boxes with just glue and used clamps to set them up. After they dried the next day our teacher took us up on the fourth floor of the school and one by one we chucked our boxes off the roof. Not one single box broke on the seam, the MDF always broke before the glue did.

Screws/nails do not hold the would together, the glue does.

[mondojackal]

I am a MECP certified installer and I am around high power systems all day. Again, nails are fine because the only holding they do is while the glue is drying. After the glue is dried you could take them out and it wouldnt effect how the box is held together. When I was getting certified we built boxes with just glue and used clamps to set them up. After they dried the next day our teacher took us up on the fourth floor of the school and one by one we chucked our boxes off the roof. Not one single box broke on the seam, the MDF always broke before the glue did.

The shop I work at builds boxes in this same fashion, never had a customer complaint because there box was coming apart and leaking. Screws/nails do not hold the would together, the glue does.

thats a cute story...nevertheless..if you want it to be done right..do it right..done cheat yourself with cheap materials and a cheap finished product..use screws!

[Cletus Vandamn]

Ok dude, after you get MECP certified and work a shop for a couple years I might value your opinion. But since you dont have the knowledge or experience I'll just leave that alone. What part about the wood breaking before the glue do you not understand?? its not rocket science or anything. I know your thick but you should be able to grasp that.

Go check out a JL powerwedge box and get back to me on its construction. Or how about this and I'll just save you the trouble, they are completely constructed with hot melt, no screws or nails or anything. They have jigs already set up and just glue those bad boys together. They hold up to the 12W7 fine. You might want to inform JL with all your car audio knowledge that they have been making all there boxes wrong.



This kid cant be serious.

[mondojackal]

Ok dude, after you get MECP certified and work a shop for a couple years I might value your opinion. But since you dont have the knowledge or experience I'll just leave that alone. What part about the wood breaking before the glue do you not understand?? its not rocket science or anything. I know your thick but you should be able to grasp that.

Go check out a JL powerwedge box and get back to me on its construction. Or how about this and I'll just save you the trouble, they are completely constructed with hot melt, no screws or nails or anything. They have jigs already set up and just glue those bad boys together. They hold up to the 12W7 fine. You might want to inform JL with all your car audio knowledge that they have been making all there boxes wrong. After that, you can call up my boss and inform him he has also been doing things wrong for the past 10 years.

This kid cant be serious.

kid??
ok, one flaw in your argument..you assume in your own self-confidence, which i have nothing against, that you know more than i about car audio. you tell me that i dont have experience, however, not even bothering to refute that at all, im just suggesting that, given that we, humble people without access to the JL box assembly construction methods, must use the best that we can to put our boxes together...

ps- nothing against you here man, i try to keep it on topic, and help the kid we are trying to help.