Tips on sealing a bass box

 

Bronze Member
Username: Karam

Post Number: 17
Registered: May-05
hey any body know the best sealent to use to seal the mdf box, some body was telling me first use silicon sealent then let that dry then varnesh the box inside out. people were saying that mdf is not air tight. could youpost the way you buit your boxes thanks.
 

Anonymous
 
Liquid Nail does the job.
 

Bronze Member
Username: Karam

Post Number: 18
Registered: May-05
what is that i never herd of it? what is it mde out of? is that what the professionals use>?
 

Gold Member
Username: Subfanatic

Walton, Ky

Post Number: 3422
Registered: Dec-04
yes we professionals use liquid nails lol
 

Silver Member
Username: Geekbike

Post Number: 104
Registered: Dec-04
There is very little difference in sealants. Pretty much any kind of caulking or sealant will work. The little bead you put around the edges of the box will do little for helping rigidity. Varnish might help with that, but I've never heard it used before.
 

Gold Member
Username: Carguy

Post Number: 2888
Registered: Nov-04
I use a glue called "Goope". It glues and seals anything. That is how I made my enclosure super air tight.
Don't forget to put a seal on the speaker itself where it gets contact with the box, along with screws.
To test the box, try and push the speaker. If it moves freely, then air is leaking. Mine is like a rock. Once it's sealed, it does not want to move.
 

New member
Username: Birdcr

Post Number: 3
Registered: May-05
what is the difference between a sealed and unsealed sub box?
 

Bronze Member
Username: Alumaprodave

CALIFORNIA

Post Number: 27
Registered: Apr-05
Screws, wood glue, then Silicone it turns to 100% rubber and is flexible so it won't crack.
 

Bronze Member
Username: Mr_wiglz

ManchesterEngland

Post Number: 15
Registered: May-05
I would personally do it (well I've actually done it) the way the industry have been doing it for years, just simple PVA glue aka wood glue. No more nails is also very good. I wouldn;t use silicone though, I've read somewhere that the vapours of silicone cause damage to the sub.

Also glue strips of wood along the inside edges of the wood. this would give a perfect finish.
 

Silver Member
Username: Rhassler

Gilford, NH

Post Number: 173
Registered: Dec-04
I heard if you install the sub while the silicone is still wet and drying, the vapours could damage it. But when the silicone is dry it wont damage the sub. Someone correct me if im wrong.
 

New member
Username: Basshd

Post Number: 3
Registered: May-05
Yes i use plain old elmers wood glue to bond the wood together(along with well placed drywall screws) and silicone to seal it. The cuts of the mdf have to be good, woodglue is not designed to fill gaps no bigger than 1/8 of an inch but woodglue when dry, the bond is stronger than the mdf itself. Follow the curing directions on the silicone usually its 24 hours before mounting your subwoofer. In fact if you make very good cuts and use plenty of elmers glue(and a few well placed screws), there is no need for any sealant at all.
 

Gold Member
Username: James1115

Wilton, Ct

Post Number: 2830
Registered: Dec-04
thats exactly how I make my boxes aswell E ! I have found this way to be the easiest and best.
 

New member
Username: Basshd

Post Number: 9
Registered: May-05
You got it James!
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