acoustic foam, need to know some things

Enclosures and acoustic damping to help quiet them.

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iakovl
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acoustic foam, need to know some things

Post by iakovl » Sun Aug 28, 2005 11:00 am

i got a 6A19, after a nice search in town i found a place that sells acoustic foam
i need to know the follow:
what do i need to search in acoustic foam?
how deep shoud the foam be?
any tips or help


thx
main rig : E8400, Asus P5Q pro, 2*2gb G.skill PI DDR900, Perc 5/i - HD103UJx4 RAID5 , wd3200aaks, HD4850, P180, VX450W, audigy 2 zs platinium pro, HD595, DELL 2709W
mini rig : Intel BOXD945GCLF2 , 1gb ddr2 , WD5000AAKS , picoPSU 90W + 80W DC-DC

Mr_Smartepants
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Post by Mr_Smartepants » Tue Aug 30, 2005 12:04 am

check out my install photos here.
I really like the 6A19 compucase. Loads of room to work in. My only complaint is the funky plastic fan holders w/non-standard mounting holes. You can see how I had to offset drill new holes on the rear of the case for the fan grill.
[size=75][url=http://homepage.ntlworld.com/erik.hansen/files/pics/Sonata/index.htm]Sonata (foamed)Bezel mod[/url]
Seasonic S12-330, 2x120mm Yate Loon D12SL-12@1000RPM, P4-2.6C w/PAL8942 80mm L1A@10v, 1GB Mushkin DDR400, ATI 9800Pro 128MB w/ZM80A, Samsung SATA 160Gb
[/size]

iakovl
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Post by iakovl » Tue Aug 30, 2005 6:16 am

i used zip's with ear plugs
nice and easy vib killer

how thick is the door foam?
main rig : E8400, Asus P5Q pro, 2*2gb G.skill PI DDR900, Perc 5/i - HD103UJx4 RAID5 , wd3200aaks, HD4850, P180, VX450W, audigy 2 zs platinium pro, HD595, DELL 2709W
mini rig : Intel BOXD945GCLF2 , 1gb ddr2 , WD5000AAKS , picoPSU 90W + 80W DC-DC

BrianE
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Post by BrianE » Tue Aug 30, 2005 6:58 pm

I think most real acoustic foam sold for sound rooms etc. would be too big to fit in a computer case other than maybe on the main side door. It tends to be kind of thick.

Try to fit it as thick as you can of course.

iakovl
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Post by iakovl » Tue Aug 30, 2005 10:28 pm

i can get 5cm!!! but that is too much
i need to know how much to put in
main rig : E8400, Asus P5Q pro, 2*2gb G.skill PI DDR900, Perc 5/i - HD103UJx4 RAID5 , wd3200aaks, HD4850, P180, VX450W, audigy 2 zs platinium pro, HD595, DELL 2709W
mini rig : Intel BOXD945GCLF2 , 1gb ddr2 , WD5000AAKS , picoPSU 90W + 80W DC-DC

cotdt
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Post by cotdt » Tue Aug 30, 2005 11:11 pm

you can put a layer both inside and outside of your computer. the thicker the better.

iakovl
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Post by iakovl » Tue Aug 30, 2005 11:21 pm

cotdt wrote:you can put a layer both inside and outside of your computer. the thicker the better.
no way
inside only
main rig : E8400, Asus P5Q pro, 2*2gb G.skill PI DDR900, Perc 5/i - HD103UJx4 RAID5 , wd3200aaks, HD4850, P180, VX450W, audigy 2 zs platinium pro, HD595, DELL 2709W
mini rig : Intel BOXD945GCLF2 , 1gb ddr2 , WD5000AAKS , picoPSU 90W + 80W DC-DC

ronrem
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Post by ronrem » Fri Sep 30, 2005 12:30 am

Foam or similar stuff ideally damps echo,the tendency of a sound to bounce until it escapes. It also can damp-mute resonences in the metal of a case,but foam lacks the density to stop some sounds passing through. An ideal thing would be a metal-foam-metal (or wood) sandwich with an additional rough textured liner-which could be a heavy fabric,carpeting,or a ribbed or textured dense foam. You then kill internal echoes and the 2 high density layers,metal or would give a barrier. You'd want a clever indirect path intake,probably under the case.

Obviously tis approach adds several inches to the overal dimensions. An existing case could provide the basic form,the inner metal wall.

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