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Hi thereI have a pair of Sound Organization 4 core stand and would like to fill in some materials in it to improve acoustic performance of my ProAc T2000 Signature. What material would you suggest me to add?
1) Steel sand
2) Lead sand
3) beach sand
4) another other suggestion?Wait for your kind advise.
Thanks and Cheers.
Follow Ups:
It depends on what you want from your system. Lead will lower the resonant frequency of the stand as well as dampen, so the bass will be emphasized. If you have a bass light system this would be advantageous, if it is bass heavy already, then it would be a detriment.Fine quartz sand will damp without adding as much weight, so the resonance won't be as low in frequency. Mix the two would give a fairly balanced amount of dampening and bass weight.
I don't believe there is any best material for this purpose. It is all a balancing act to make sure your systems has an even distribution of resonances. It is impossible to dampen them all as every substance has a resonance. It is better to make sure you don't have a preponderance of any particular resonant frequency than to try to eliminate them all. Too much dampening can deaden the sound as well.
Just my two cents,
Analogon
Here is the link:http://www.targetaudio.com/xtraheavy.html
and that link and domain doesn't exist anymore.
Well, that URL still work.
And its parent URL says it is owned by Ledger Bennett.Don't know how you access that URL.
Thanks everyone. Regarding to the density of shots or sand, any suggestion?I tried playing with fine shot before, didnt increase weight too much, but bass is improving. What about using high density ones? (bigger diamensions/size)
Any idea?
I have lead shot in my target stands which are somewhat into the room. I think the weight of the lead has saved my speakers from tipping over a couple of time when being accidently bumped by guests. The lead is completely encapsulated within the stand. Only when filling or unfilling should special precautions be applied and the endeavor should be taken outside.Elliot •¿•
nt
I don't like adding mass but damping does help. I recommend the use of polyester batting from a craft shop. It needs to be rolled or compressed tightly in some way to work, but it is effective. If you have access to the whole width of the column you're going to fill, you can just roll it up very tightly and force it straight down the column. If you only have access through a small hole of smaller diameter than the column, cut it into narrow strips and feed them in one at a time, compressing as you go with a rod thin enough to poke through the hole, until you can get no more in.As well as being effective, it's also cheap, non-toxic, and creates no dust. It's relatively quick to do if you have full width access to the column but a bit slow if you have to work with thin strips and keep poking them in.
David Aiken
Hi;
a german speaker-builder magazine wrote recently about that topic. They said that lead is much better than quarz sand (beach) but more exensive and they recommended a half lead shot and a half quarz sand.Due to the lack of lead shot I filled my stands with quarz sand which I bought very cheap at a diy store. This did not dust. and it works well. No idea how something else works different.
hig
Whatever you use, I suggest you take them outside to fill them, as their will be a lot of dust created.
agree.Need to buy mask to cover myself enough before fill sand.
Thanks and Cheers.
Agreed, but it's not just for my protection - I ended up with very fine dust all over my living room!
I asked a new friend (who happens to be receiving a master's degree in construction engineering technology) what sand would work best to control vibrations by converting them into heat (for the purposes of building a sandbox isolation platform). He said that sand used in swimming pool filters should work best.
Try Black Blast, it's heavy and the particles are flake shaped and pack very well. It's also inert and very cheap, I picked up a 50lb bag at Menards for $3.50
Since we are listing everything there is sand-blasting sand which has larger grains and is available from swimming pool places and from pet stores because it's a popular aquarium gravel. It's less mess, easier to clean up if you spill some.
I've used cat litter in my stands in the past. It's frigging cheap and will not deteriorate over time (mold, fungus, whatnot). It's not ultra-dense but can do the job for cheap.-Chris
The same stuff as cat litter can be bought in a large bag for cheap at auto parts stores. It's used for cleaning up oil spills.
I would avoid lead (poison) and "frac sand" as used for oilfield fracturing because the round grains get in eyes and are difficult to remove.
Suggest ordinary builders sand as used in concrete because it is made from crushed rock and the jagged grains pack in nicely.
I suppose you could use beach sand or gypsum sand except the park ranger may object.
I have never filled a stand with any material, but I have read on this board that lead shot is easier to use, especially if you spill it. You can get Play Sand at Home Depot which is sifted and very clean, but could make quite a mess. You might try a sporting goods or gun shop for lead shot. Just my 2 cents worth...
There is also steel shot which is safer (no lead) but it is coated with an anti-rust compound which may be greasy and it still rusts eventually.
"Play Sand" is same as used in concrete and is OK to use.
Not a good idea. As I understand it, it's not a good idea to have a mass of iron anywhere near speakers or components.
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