PDA

View Full Version : Air tight?



smokeoff
06-03-2003, 09:57 PM
what do u use to make your box air thight....

1. around the sub.
2. at the joints.
3. the box its self.(I read that MDF is not ait thight)

mgaidica
06-03-2003, 10:06 PM
yeh, i dont use anything between the subs, a lot of liquid nails, sometimes wood glue in spots. As for mdf not being airtight i dont know, it is! U could use fiberglass resin in there but thats just as air tight as MDF...

smokeoff
06-03-2003, 10:28 PM
I'm not sure on the MDF either, I just read some where that if u want it air tight u should prime the inside of the box or use a paint that would seep into the wood. Maybe it's because wood is poris, so to make some thing out of wood air tight requires a little extra effort.:confused:

mgaidica
06-03-2003, 10:31 PM
i dunno, mdf is airtight though... so u remember where u heard this?

SPLThunder
06-03-2003, 10:38 PM
THE $.50 a tube caulk, silicon, glue.

IT WORKS... you will not blow it or anything

ss3079
06-03-2003, 11:49 PM
Originally posted by smokeoff

3. the box its self.(I read that MDF is not ait thight)

Dont worry about that.

If you are...then throw some fiberglass over it. Most everyone just leaves their boxes bare MDF, or adds carpet, leather, velvet, etc...

- Steve

SPLThunder
06-04-2003, 02:29 AM
Originally posted by Jmac
MDF is pressed fibreboard ... It's not porous ...

Oh yeah then how does wood glue soak into it mr smarty pants. (by the way i know MDF is air tight)

demomike1
06-05-2003, 10:06 PM
http://www.ofsoundmind.com/osm/speakers/subs6.html

smokeoff
06-05-2003, 11:59 PM
dudue, thats it. I have been looking all over for that. Now I don't feel like I am losing my mind.:)

SPLThunder
06-06-2003, 12:05 AM
hey guess what we learned At school today... MDF isnt 100% air tight. (a day late a dollar... ah **** it)

B&R Innovation2
06-06-2003, 12:05 AM
Well ****..
been installing for 5 years and I never knew that...

maylar
06-06-2003, 07:20 PM
Don't despair - us know-it-alls can always claim he's fulla do-do :p
I have some 1/4" MDF in my shop... think I'm gonna try that vacuum experiment.

ss3079
06-06-2003, 07:28 PM
Originally posted by maylar

I have some 1/4" MDF in my shop... think I'm gonna try that vacuum experiment.

As will I...

That article fails to mention how big those five pieces of 3/8" MDF were...and what vacuum was used...who knows - maybe it was a big industrial one.

- Steve