PDA

View Full Version : Lining an enclosure with sound deadener



Scarenius
10-05-2004, 11:26 AM
*Crazy idea #1274*

If I line the INSIDE of my enclosure with sound deadener, what kind of change would I notice?

woahloud
10-05-2004, 01:57 PM
Assuming you're using...MDF? I would have no idea...lol. Probably nothing.

req
10-05-2004, 02:09 PM
*Crazy idea #1274*

If I line the INSIDE of my enclosure with sound deadener, what kind of change would I notice?

i wondered the same thing.

anyone ever done this before?

themainjam
10-05-2004, 02:10 PM
MDF is self dampening so you dont "need" to line the inside. as for any spl gain probably nothing to minimal but i could be wrong....

themainjam
10-05-2004, 02:11 PM
and no i havent done it. but why dampen something that already dampens itself?

req
10-05-2004, 02:14 PM
and no i havent done it. but why dampen something that already dampens itself?

what if its fiberglass ;)

skeptikal
10-05-2004, 02:36 PM
fiberglass ***** ;).

req
10-05-2004, 02:42 PM
bwahhahhaBAHAHHAHA!!! ^^^^^








looser :)

themainjam
10-05-2004, 02:43 PM
what if its fiberglass ;)


then i guess it couldnt hurt.....

rx7vert
10-05-2004, 07:44 PM
wouldn't that be like putting fiberfill in it. same idea.

for ported, I dunno, seems like it would screw up the port by hurting the airflow.

squeak9798
10-05-2004, 07:48 PM
what if its fiberglass ;)

Molding clay. People use it all the time to kill the resonances of their 'glass kickpanels.

supa_c
10-05-2004, 07:50 PM
What about those Sound deading foam panels i see im my PE catlogue(sp)

Scarenius
10-05-2004, 08:39 PM
So it's never been tried before? Ok, I might attach a layer or two to one of my enclosures, see about any difference. Fill you in. I have a rockbox m103a amp to install tomorrow, too.

I asked, because sound going from the back of the box can cancel out sound from the speaker, it's why the sound better facing backwards than forwards. (someone tested this, I found the link on one of the old threads)

So, if I were to line that, super-deaden it, there'd be less vibration from the back of the box to interupt the vibration from the speaker. Means (potentially) clearer, richer, deeper bass.


... Why is rockbox in red? Nevamind, put it in search looking for review(s)..

squeak9798
10-05-2004, 10:29 PM
I asked, because sound going from the back of the box can cancel out sound from the speaker, it's why the sound better facing backwards than forwards. (someone tested this, I found the link on one of the old threads)

I think you are misinterpreting what was said in THIS LINK (http://installer.com/tech/aiming.html). The incident wave (the red wave) isn't the sound coming from the back of the box, it is the sound radiating rearward from the speaker.


So, if I were to line that, super-deaden it, there'd be less vibration from the back of the box to interupt the vibration from the speaker. Means (potentially) clearer, richer, deeper bass.

There are benefits in having a sturdy box (which is why we use .75" or greater MDF), but you'd have better resonant killing properties by layering up the MDF (making the walls twice as thick with the MDF) than trying to layer on sound deadening IMO. You don't want the box to flex, that's a given, and can achieved either by using internal bracing or, as I mentioned, doubling the thickness of the walls of the enclosure.

`pr0digy
10-06-2004, 11:11 AM
I was thinkging of throwing some sound deadener on the inside of my ported box, but was told that it would affect the tuning.

jtomsic
10-06-2004, 11:13 AM
ive heard that glassing or putting dynamat in ur enclosure can change the resonant frequencies of ur box

req
10-06-2004, 11:58 AM
i was thinking of spraying some rubberizer on the inside. maybe that will help.. i was thinking of doing that to stop resonances and to seal in some of that fiberglass stench =P

OLD_SCHOOL
10-07-2004, 02:47 AM
can help with high freq resonance