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I am dealing with ed for a sonosub project. My question is: What is the purpose, or, how important is insulating the wall of the sonotube? ed told me not to bother. What do the members say? This sub will be sealed.
Sonosub question
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The insulation is there to serve two purposes:
1) The insulation makes the volume 'seem' larger to the driver, with all the advantages that entails.
2) The insulation damps out resonances and thus smooths out the response of the sub.
Whether you need it or not is highly dependent upon the size of your sub. Small subs may benefit from the volume-adding effect, but won't need the resonance damping as much. Large subs won't need the additional volume, but can suffer from nasty resonances.
As for you, I'd only put insulation at the endcap opposite the driver, to damp out resonances from that flat surface (round surfaces aren't nearly so bad, part of the advantages for the sonosub). If you want more than that, you are free to do so, but it wouldn't be necessary.
HTH.
1) The insulation makes the volume 'seem' larger to the driver, with all the advantages that entails.
2) The insulation damps out resonances and thus smooths out the response of the sub.
Whether you need it or not is highly dependent upon the size of your sub. Small subs may benefit from the volume-adding effect, but won't need the resonance damping as much. Large subs won't need the additional volume, but can suffer from nasty resonances.
As for you, I'd only put insulation at the endcap opposite the driver, to damp out resonances from that flat surface (round surfaces aren't nearly so bad, part of the advantages for the sonosub). If you want more than that, you are free to do so, but it wouldn't be necessary.
HTH.
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215 Posts
thanks for the info. I'm doing a dual opposing driver setup in a 3'6" sonotube so i guess the insulation is not necessary. Obviously this is my first build so i'm trying to make sure i do not overlook anything. I've done many "search's" on these sonotube builds but i seem to still have a few unanswered questions ( more than likely due to inexperience). These forums are a great help.
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215 Posts
Well, after a long wait, i finally found the time to build my sonotubes. Thanks to MKtheatre for his help in the beginning. Went with 4 190v2 drivers in 2 tubes. I have not fired them up yet, they will be fired up by friday. ED cut everything for me all i had to do was assemble and wire and paint. Pics are assembly related with a pic of the graphic i think i'm going to apply to the tube. I do not have REW so i won't be able to post any measurements or anything. I hope to aquire and learn how to use it in the future, though. Many thanks to all forum members here that post that inspired me to try this.
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The subs come home tonight. Fire up should be between 7-8pm central. This is the graphic i settled on for the tubes:
http://i737.photobucket.com/albums/x...ass_Tubes3.jpg
http://i737.photobucket.com/albums/x...ass_Tubes3.jpg
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