In article <I9adnZS-Yp5dQyjanZ2dnUVZ_sWdnZ2d@[EMAIL PROTECTED]
>, "MOSFET"
<ntanner@[EMAIL PROTECTED]
> wrote:
>You can make a sub box out of virtually any material as long as it meets
>certain criteria. First, it must be airtight obviously. And second, it
>MUST NOT flex or resonate. Sheet metal would certainly not be my first
>choice for exactly that reason (like a bell, metal has a tendancy to
>resonate). Think about it, if the walls of your subwoofer are flexing or
>resonating in any way, this flexing requires energy that is wasted,
energy
>that SHOULD be reinforcing the sound energy.
>
>If your sheet metal is thick enough I suppose that would work OK.
Actually,
>the VERY BEST material for building a subwoofer enclosure would be some
type
>of stone like marble or granite. This would ensure absolutely no
resonance
>of the enclosure, ergo no lost energy. However, because of the weight
and
>the difficulty of working with stone (attaching slabs together, ect.)
>virtually no one builds their enclosures out of it except, perhaps, for
some
>esoteric home audio subwoofers. MDF is probably the most popular
material
>because it is extremelly rigid, yet easy to work with.
>
>Anyway, that's my $.02,
>
>MOSFET
On a DIY show i saw somebody using SFDF super fine density. i would not
know what it is if I saw it.
There is a website of somebodys home theater where dual horns are under
the floor from cement formed walls.
Marble and granite do ring up out of the range of the woofer. It can
become a
problem and needs to be damped in the upper registers.
If you lamanate, you can use all kinds of combinations of materials.
Plexaglass/aluminum is popular.
greg
>"Evan" <Evan.34q13w@[EMAIL PROTECTED]
> wrote in message
>news:Evan.34q13w@[EMAIL PROTECTED]
>>
>> or does a box just have to be wood because the wood conveys the sound
>> better
>>
>>
>> --
>> Evan
>>
------------------------------------------------------------------------
>> Evan's Profile: http://www.zerohurtz.com/member.php?userid=1096
>> View this thread: http://www.zerohurtz.com/showthread.php?t=69717
>>
>
>
|
