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Acoustic Question...
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psychowave
IsraTrance Full Member
Started Topics :
52
Posts :
217
Posted : Oct 1, 2007 16:29
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Hello all!
Firstly sorry a bad english, I´m Brazilian...
I´m looking for the best position of my desk in my room...there are the room map:
http://www.sbs.org.br/quarto1.gif
This is the best position? or I can best result positioning in other place?
thanks
Natan
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Mike A
Subra
Started Topics :
185
Posts :
3954
Posted : Oct 1, 2007 16:33
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having the wall 2 meters behind you is going to be problematic
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Boobytrip
IsraTrance Junior Member
Started Topics :
39
Posts :
988
Posted : Oct 1, 2007 17:00
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orange
Fat Data
Started Topics :
154
Posts :
3918
Posted : Oct 1, 2007 17:16
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psychowave
IsraTrance Full Member
Started Topics :
52
Posts :
217
Posted : Oct 1, 2007 21:15
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owww! bad news...
txs for all reply..
I look the articles on suggested website...
Using the "38% rule" a best place is on bed position...I´m right?
Of course is not a good position..but the best position..in my small room...
I´m right??
Thanks again! |
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fuzzikitten
Annunaki
Started Topics :
40
Posts :
603
Posted : Oct 1, 2007 22:07
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You're right, best position is where your bed is.
Don't forget to cram stuff in the corners (top and bottom) to minimize the bass buildups. Folded covers, a beanbag, etc. It'll make your room smaller but help with bass work.
Also if you have a dresser or bookshelf you should put it in your room to keep the reflections to a minimum.
More stuff = less reflections = clearer picture of your frequencies. |
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Ahn'Quyin
Started Topics :
0
Posts :
10
Posted : Oct 2, 2007 00:53
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Yes, the room is very small.
What kind of monitors have you ?
Nearfield or Midfield ?
If producing is very important, is it possible to changes the rooms ?
But in this room, whatever you try, I think you haveproblems with reflexions.
Everything is possible within the scope of the possibilities.
Or you think about good headphones (AKG, etc) but then you must be careful with volume !!!
Indeed, you can do the best one from it, but then you must nail your mattress to the wall and cannot sleep any more, lol ! A joke !!!
greetings |
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psychowave
IsraTrance Full Member
Started Topics :
52
Posts :
217
Posted : Oct 2, 2007 14:06
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Well!
Change for other room is impossible...I need to make something to get a better sound on this room...
I´m go search for home-made bass traps...here in my country a professional bass traps cost too much!
Any here can suggest a material type to make a bass trap?
Ahn´Quyin:
My monitors are the Alesis M1 620...are Midfield right?
thanks again for all!
Natan
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Boobytrip
IsraTrance Junior Member
Started Topics :
39
Posts :
988
Posted : Oct 2, 2007 14:22
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Ahn'Quyin
Started Topics :
0
Posts :
10
Posted : Oct 2, 2007 14:35
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Hi again !
Good monitors 
No, they're nearfield ! That's good !!!
You can build basstraps. Maybe this will help :
http://www.bobgolds.com/TrapMartin/home.htm
there are photos, step by step .....
and his room is also small
the cheepest way I think
good luck |
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subconsciousmind
SCM
Started Topics :
37
Posts :
1033
Posted : Oct 2, 2007 16:10
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Small room like this is problematic, but at least try to have it symmetrical, even the cupboard left of the left monitor is already changing the sound of the right monitor compared to the left one...
 Most of my music for you to download at:
http://www.subconsciousmind.ch |
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fuzzikitten
Annunaki
Started Topics :
40
Posts :
603
Posted : Oct 2, 2007 17:26
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Quote:
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On 2007-10-02 14:06, psychowave wrote:
Any here can suggest a material type to make a bass trap?
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Just get some insulation from a hardware store and stuff it in to a garbage bag. Then cover the garbage bag with something soft (old carpet or clothes). Not too fancy, but RJ-45 insulation works well for bass. |
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subconsciousmind
SCM
Started Topics :
37
Posts :
1033
Posted : Oct 2, 2007 17:34
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Quote:
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On 2007-10-02 17:26, fuzzikitten wrote:
Quote:
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On 2007-10-02 14:06, psychowave wrote:
Any here can suggest a material type to make a bass trap?
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Just get some insulation from a hardware store and stuff it in to a garbage bag. Then cover the garbage bag with something soft (old carpet or clothes). Not too fancy, but RJ-45 insulation works well for bass.
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Just be aware any kind of accoustic elemtent has to be able to pass air through! has to be permeable to air! (except pyramid kind stuff which works differently
Most of my music for you to download at:
http://www.subconsciousmind.ch |
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fuzzikitten
Annunaki
Started Topics :
40
Posts :
603
Posted : Oct 2, 2007 19:11
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Quote:
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On 2007-10-02 17:34, subconsciousmind wrote:
Just be aware any kind of accoustic elemtent has to be able to pass air through! has to be permeable to air! (except pyramid kind stuff which works differently
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Not so much for bass, but definitely for higher frequencies.
Some bass traps I've seen use a dense Rockwool slab encased in an air-tight fixture. The vibrational energy of the bass is still transferred to the rockwool slab though because there's air in the case. |
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subconsciousmind
SCM
Started Topics :
37
Posts :
1033
Posted : Oct 2, 2007 19:59
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Quote:
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On 2007-10-02 19:11, fuzzikitten wrote:
Quote:
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On 2007-10-02 17:34, subconsciousmind wrote:
Just be aware any kind of accoustic elemtent has to be able to pass air through! has to be permeable to air! (except pyramid kind stuff which works differently
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Not so much for bass, but definitely for higher frequencies.
Some bass traps I've seen use a dense Rockwool slab encased in an air-tight fixture. The vibrational energy of the bass is still transferred to the rockwool slab though because there's air in the case.
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How exactly did they look? Because some closed systems work with the effect of swinging plates. Other Basstraps have only a Bassreflexhole and Rockwool inside. But both Systems have to be carefully designed and tuned. Platesize and thickness f.i. influence aborbed frequ. as well as size and length of holes.
Absorption I have seen was working in three ways:
1: the sound is sent trough a material (permeable to air, since sound travels through air) in order to be slowed down, speak loosing energy. The thicker the slowing material the deeper the frequency which can be absorbed. 15cm of Rockwool at your wall will give you absorption down to 200Hz or so.
If you want to go lower, thicker is needed (that is, corner traps)
2: Sound is being sent into a environment which hinders the sound of being reflected, that can be like 1) but also constructions where sound is lost inside. boxes, pyramid like stuff, labyrinths.
3: A thing is being animated by the sound and starts to oszillate in a way so that the original sound is being extinct.
I'm no expert, but as far as my knowledge goes a garbagebag unpermeable to air filled with some isolation stuff has no serious ability to absorb low or high frequency. Probably a bit coincidally, but certainly the effect would be much higher and better if the isolation would be placed in a bag permeable to air.
Rockwool is permeable to air by the way and very good for building own accoustic elements. styrofoam or rubber foam, foam plastic is almost unusable by the way (except the pyramid shaped stuff).
Most of my music for you to download at:
http://www.subconsciousmind.ch |
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