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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: How do I build a anechoic speaker enclosure and what material to use.....Is it worth the trouble? posted by KINGDADDY on January 15, 2001 at 14:10:47:
I am not quite sure what you mena by an anechoic speaker enclosure.An anechoic chamber attempts to absorb all the sound within it, so as to allow no refelctions to contaminate measurements. If by use of this phrase, you mean a speaker enclosure that absorbs all of the back wave, then one might consider either the acoustic suspension (sealed box completely stuffed with absorbing amterial), or the acoustic labyrinth. A labyrinth is NOT a T-line, but attempts to guide and dissipate all the back wave energy.
As for the use of a sphere, this is due to the outer shape of the enclosure minimizing diffraction effects, and allowing a smooth FR (assuming the driver is smooth to begin with). From the standpoint of the inside fo the sphere, it is one of the worst shapes, as the dimension across the sphere is exactly the same in all directions. Unless it is filled with a decent sound absorbing material, it will have a very strong standing wave mode.
A more ideal situation, would be an enclosure that was spherical on the ouside, and a golden rectangle on the inside, or some other mathmatically odd shape.
Jon Risch
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Follow Ups
- Re: How do I build a anechoic speaker enclosure and what material to use.....Is it worth the trouble? - Jon Risch 01/16/0111:41:19 01/16/01 (1)
- Re: How do I build a anechoic speaker enclosure and what material to use.....Is it worth the trouble? - kingdaddy 08:20:16 01/17/01 (0)
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