pushing in cone?

6three6mafia6 · Post by **6three6mafia6** » Wed Mar 09, 2005 9:41 pm

hey man my friend did it right in front of me and he didnt do it hard at all, i mean is it just me or do those cones seam REAL cheap?

Ryan from Ohio · Post by **Ryan from Ohio** » Thu Mar 10, 2005 3:04 am

I seal them tight.

That means all edges are siliconed. I run a bead around the sub basket and fill the screw holes.

I say its sealed when you can damn near punch the sub and get no movement.

Actually back in the day there was one store that let you "slug" the sub. LOL

Yeah the sales guy would say "this sub is the best in a sealed box, sealead so good you can slug it".

Oh yeah?

So I got to give it a good slug....lol Bitch didnt move either....lol

JeremyC · Post by **JeremyC** » Thu Mar 10, 2005 7:06 pm

MDF isn't wood? I will agree it isn't solid wood, but it is wood. Just highly processed wood. The reason it falls apart when you get it wet is the glue is water soulable and the wood particales expand increasing the problem.

audiobass10 · Post by **audiobass10** » Thu Mar 10, 2005 7:25 pm

JeremyC wrote:MDF isn't wood? I will agree it isn't solid wood, but it is wood. Just highly processed wood. The reason it falls apart when you get it wet is the glue is water soulable and the wood particales expand increasing the problem.

Well, I guess you could call it wood. It's made up of wood fibres glued under heat and pressure.

spkrman · Post by **spkrman** » Sat Mar 12, 2005 2:31 am

audiobass10 wrote:Perhaps the box was resined? Not sure if that would offer any sort of temporary water proofing..who knows. Not really worth the risk..

resin would be permanant water proofing, assuming the entire box was covered.

submerging the box in water with the woofer in it would work just fine... so long as you dont have a cheap paper cone. Some sort of treated paper would hold up, but cheap paper would soak up the water and do bad things.

MDF is pretty much saw dust glued together under alot of pressure... it doesnt like water on its edges, but can tolerate SOME on the skin of it.

If you really wanna see something puff out, soak some cheap particle board.. mmmm

And, you CAN push on the speaker to test for a good seal.. but the time it takes to come back out and the amount of pressure it takes to push the woofer in is directly proportionate to the internal airspace of the box and the size of the woofer... and unless you feel like doing math all day, its not worth it to find out exactly how long it should take. IMO just play the woof and feel all around the box... or just build it so you KNOW there are no air leaks.... silicone around the woofers being a little excessive, so long as the hole is cut properly there should be no issues.

now.. Lets say you have a box JUST big enough to hold the woofer that is 100% sealed. Its gonna be an SOB to push it in because you are trying to compress that lil bit of air... you would SERIOUSLY be compressing the air with any movement.

Now lets say you have a 20 cube box with a single 12 in it... compressing the air behind the woofer will be cake, because it will cause a very small change in air pressure.

71buickfreak · Post by **71buickfreak** » Sat Mar 12, 2005 7:46 am

Liquid nails is the worst thing you could use to glue your box together. If you don't have access to a high-quality box glue (like what Virtual Technologies used to sell) then you should use a good quality carpenters glue and seal the inside with silicone afterwards. If you are stick building your box, you shud use some coarse threaded exterior wood screws (not drywall screws) to give that extra hold. The carpenters glue is what is going to hold the box together. If you can find some siliconized wood glue, that would be the best compromise of all as it has silicone built in to the glue and will help seal the box as well as hold it together.

William from NOLA · Post by **William from NOLA** » Sat Mar 12, 2005 10:36 am

I've actually used Liquid Nails to seal my box. I had forgotten to buy extra silicon, so I used that instead. I found that it dries far quicker and works just as well, but you can't clean up as easy. I've had to use sand paper to get rid of the excess.

audiobass10 · Post by **audiobass10** » Sat Mar 12, 2005 10:53 am

William from NOLA wrote:I've actually used Liquid Nails to seal my box. I had forgotten to buy extra silicon, so I used that instead. I found that it dries far quicker and works just as well, but you can't clean up as easy. I've had to use sand paper to get rid of the excess.

Yep, IMO that's the only downfall to using LN..very messy. But from my experiences it works well to seal boxes.

71buickfreak · Post by **71buickfreak** » Sat Mar 12, 2005 10:57 am

it does do the job, but while I have not had it happen, it is a possibility of the fumes building in a sealed box and it exploding. its not a myth, I have seen the aftermath.

William from NOLA · Post by **William from NOLA** » Sat Mar 12, 2005 11:24 am

I'm glad my box is ported