insulation effct in box

Discussion in 'Subwoofer Box and Custom Fabrication' started by darryle, Dec 29, 2006.

  1. darryle

    darryle Full Member

    Can the effect of faking out box size with insullation be expressed in percent?Say for example a 1 cu ft box with all sides lined with 1" of insullation would behave like box 20% bigger,making the speaker behave like its in a 1.2 cu ft...I think I remember this girl back in 69 who had a...sorry wrong forum
     
  2. TheViking

    TheViking Well-Known Member

    LOL!!!!


    the effests of fill in the box are minimal...lining the walls will not result in much improvement other than helping midrange reflections.....If you wanna really make a BIG difference, you need to stuff it real good! The dacron/insiulation does its job by slowing don the waves and acrtually heating the air, this makes the speaker think it is in a larger box, the effects, at best are 10-20%.....In a small box, that aint much...in a bigger box, it can make a true difference
     
  3. darryle

    darryle Full Member

    Thanks Viking ,I knew there was some effect,but didn't know how much,did you ever use the DBX22for cassette play back,that and the DBX224 for recording ?
     
  4. TheViking

    TheViking Well-Known Member

    never had the pleasure of owning any dbx equipment, other than playing with it in the home audio sections on the slaes floor years ago. I made a few dbx recordings...sounded very good.....the noise was mostly gone, but the dynamic range effects on some of the other equipment sounded a little odd at times...but was a very cool technology.....
     
  5. sl0wm03

    sl0wm03 Full Member

    What does the insulation do to the sound of a sub? I've seen it, but don't know what it does. If i have a box with 2 subs in there, would I need to divide the sub wit 2 walls
     
    Last edited: Dec 29, 2006
  6. aznboi3644

    aznboi3644 Full Member

    Adding poly fill to a normal sized sealed box will not make much of a difference.

    But if you have like a 2 cu ft sealed box or bigger than yeah you will notice a difference.

    All it does is like Viking says...converts the backwave into heat and makes the sub think that the box is a little bigger than it really is