Topic: Rockwool vs Foam Egg Crates

[eliahp]

Sirs, Rockwool or Foam Egg Crates which is better for room acoustics?
May I know the disadvantages/advantages vis a vis with each other? or me specific use sila when it comes to absorbing/diffusing unwanted frequencies?

Am thinking kasi of doing some scoustic treatment for my room and I dont know what to choose.

Thanks!

[Gino]

Watch this. Leave the egg crate for eggs.

http://youtu.be/HxfMUi7f0k4

You don't go treating a room blind. You must know its acoustic problems first. Then you look for specific solutions. The wrong treatment can make the room sound worse. At best it is useless.

What is you room dimensions length, width, height?

[eliahp]

Thanks sir, but Im talking about egg foam crates like this one



the same lang ba sila ng effect with egg carton trays?

[eliahp]

Small room lang sir. Room size is 8.5 feet x 11 ft

[zram18]

these are useless if you do not know the principles of good sound isolation and the 3 factors to consider:  mass, damping and decoupling.

research first topics on the web as to materials and methods on sound isolation, check your actual room reflective areas, bass traps, etc. dont rush into buying unnecessary items, study first.

your room might have weak links such as windows or door slits such that a slight opening might render those materials ineffective.

check the previous blogs here in pdvd entitled: poor man's soundproofing. its helpful and suggestions are much cheaper, several pdvd members have already undergone and asked these same questions way back in year 2006 and solutions were given by our best gurus here in pdvd.

[audiojunkie]

Rockwool and egg tray are completely different materials so obiously different.

[eliahp]

Rockwool and egg tray are completely different materials so obiously different.

Exactly sir. So, what I want to know is kung me specific usage ba ang bawat isa. For example if the room produces echoes mas ok to use egg crates, but if the room problems are  low frequency, reverberation etc use rockwool.

[Gino]

Given your room size and the "treatment" materials you have in mind, I say both are useless as far as bass is concerned. You will need several feet thickness for both to absorb low bass.

Rockwool however,is a good absorber for 500hz up. Caution on having a totally dead room. You want absorption as your foundation, and some diffusion (Rockwool is not) to make the room sound bigger and airy.

[deist]

We can address your question properly if you can please provide us the following information:

1. Room size/dimension (which you gave but how high is the ceiling?), materials used for its walls, floor & ceiling, windows & door/s.

2. What kind of speakers are you using; floorstander, bookshelf?

3. How far are your speakers from each other? from the back walls? from the side walls? from your listening position?

4. How far is your listening position from the back wall?

5. What issues do you want to address; too much bass? screechy highs? lack of stereo imaging etc.?

Personally, I can't suggest which acoustic treatment is better for what application in general unless we know what we have to deal with. By providing the above information, we can have a mental picture of your room issues and base our suggestions from there. OR much better if you can take a picture of your room set up and post it here 

[praktikal]

una sa lahat, ano ang condition ng room mo ngayon? ano ang meron? may echo ba?

ang di ko malilimutang tip sa isang magazine dati, pumwesto ka daw sa gitna ng room at pumalakpak to check kung may echo. meron ba?

are you the type of person na willing to spend?

step by step tayo...

[eliahp]

Thank you for your inputs sirs.

To answer your questions:

1. Room size/dimension (which you gave but how high is the ceiling?), materials used for its walls, floor & ceiling, windows & door/s.

3.5 meters x 3.2 / room height 2.5 meters /  concrete front and back walls / wood on the left side and concrete on the right.
 

2. What kind of speakers are you using; floorstander, bookshelf?

Bookshelf

3. How far are your speakers from each other? from the back walls? from the side walls? from your listening position?

10" back of the speakers from the wall / 15" from the side walls

4. How far is your listening position from the back wall?

about 15"

5. What issues do you want to address; too much bass? screechy highs? lack of stereo imaging etc.?

Too much bass sometimes.



pumalakpak to check kung may echo. meron ba?

wala naman sir.

are you the type of person na willing to spend?

not too much sir. around 5k lang for room acoustics if it will contribute for a better music listening experience.


Thank you sirs!

[♡ lvcdg23™ ✌]

^
Sir ang maganda dyan PM nyo si sir Tony Rodriguez aka trod93.
Kung malapit cya sa inyo, he will visit your area personally and suggest room treatments based on your budget

http://www.pinoydvd.com/index.php/topic,105064.0.html

[audiojunkie]

Baka proper system setup lang makuha na ang excessive room response relative to the gain from your system. Minimal room treatment to keep your room lively unless you're building mixing studio.

[Nelson de Leon]

Kung too much bass sometimes, hindi ba makuha sa volume adjustment?

[Gino]

What you can do is properly space your speakers. They are just too near the walls. The walls are high pressure boundaries. You can apply the rule of thirds.  Use the 10.49ft wall as your front wall. Place the speaker drivers at 3.47ft from front wall. Put the listener's head at 3.47ft from back wall. Spread the speaker apart as far as you can, approaching an equilateral triangle with the listener. Don't go too close to the side walls. You can lessen the bass by moving the speakers a few inches at a time towards front wall. Adjust speaker distance from side walls a few inches at a time, nearer and farther. note its effect.

With this config, you should get decent room response. It will not be flat. It will be far from perfect. If you run a reliable audiophile frequency sweep, you will notice ups and downs in the sound. That is your room response. There are sweeps that have vocal annotations of certain frequencies. What you want to do is lower the high volume frequencies. You can absorb and or diffuse. That is why treatment must be predictable. Not blind.

See what you get after all these changes before you begin room treatment.

[audiojunkie]

Saka speaker positioning importante rin to avoid back wall loading...

[deist]

+1 sa comment ni Gino. Pls read his suggestions about speaker placement. Masyadong malapit sa walls ang speakers.

[Nelson de Leon]

Masyadong makitid ata yun room kaya sinasagad niya ang width so he has to position it near the walls.

[markcrenz]

3. How far are your speakers from each other? from the back walls? from the side walls? from your listening position?

10" back of the speakers from the wall / 15" from the side walls

4. How far is your listening position from the back wall?

about 15"

5. What issues do you want to address; too much bass? screechy highs? lack of stereo imaging etc.?

Too much bass sometimes.

Masyadong reinforced ang bass due to proximity sa walls ng speakers and listener.

[eliahp]

Thank you for your comments sirs. I moved my set-up in a bigger room in the house and noticed that there's a huge improvement meron pa din colorations pero slight na lang so Im still thinking of putting room treatments.

Thank you sirs!

[Gino]

Good boy