On Monday 22 October 2007, Phil M Perry wrote: > Chris Knadle wrote: > > On Friday 19 October 2007, Phil M Perry wrote: > >> Some random thoughts below... > > > > Since I've never used soundrpoofing cases: do these use internal foam > > for the soundproofing? I wouldn't be thrilled with that, as it's typical > > for foam to degrade and become particles and become messy. > > Quite true. Yes, the case would be lined with acoustic foam to > absorb the sound, and your job would be to find foam that doesn't > crumble into dust.
The size constraints of a computer case limits foam options a lot. Found a
link for this being done with melamine foam:
http://www.frostytech.com/articleview.cfm?articleID=982
Melamine is stiffer foam which I think doesn't become particles; it's also
not the optimum foam for sound deadening.
> > I just opened a fanless machine I had put into service two years ago --
> > not a spec of dust. At all. It surprised me -- I expected to see some
> > dust in there being that there are lots of holes in the case.
>
> A fanless machine will have to cool by convection, which means large
> heat sinks and plenty of room for air to flow. It can be done. Did you
> have any air filters on the machine with no dust?
No filters; holes in the case are directly to the open air. There is a
tiny amount of airflow sneaking past a partition beyond which was a rackmount
UPS that has a fan on the side.
> > I don't want to have to work around tubes of antifreeze.
>
> A few years ago I saw a site describing the cryogenic cooling system
> that some fanatical overclocker had put together. Quite amusing the
> lengths that some people will go to.
I wonder how often it's necessary to go buy liquid nitrogen for the thing.
Not something you want to try on a box you want to be available all the time.
-- Chris
--
Chris Knadle
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