This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.

Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

Early reflection point height?!

Discussion in 'F.O.H.' started by AboutBlank, May 31, 2013.

  1. AboutBlank

    AboutBlank Member

    Joined:
    Nov 27, 2009
    Messages:
    1,330
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Berlin, Germany
    Should I place my panel absorbers(90cm high and 45cm wide) where my ears are, in the sitting position of course, or should I follow the "tweeter line"?
    Problem is the monitors are slighty angled downwards and I would end up placing the panels very very low on the back wall(where my bed is:wave:)...



    On a sidenote, I live in this place and can't go crazy with trapping and stuff.
     
  2. Kohugaly

    Kohugaly Member

    Joined:
    Oct 15, 2011
    Messages:
    258
    Likes Received:
    0
    Trophy Points:
    16
    Sound is a mechanical wave. If it hits solid object it follows law of reflection. Early reflections are those which bounce only once before reaching the ear. So a logic placement of absorber is at the spot from where the sound reflects directly to your ears. If you put mirror at that spot you should see your monitors in it (as light follows the same reflection law). That is also a good trick how to find the right spots - sit at your sitting position and ask someone to move a mirror along the wall. Everytime you see your monitors in the mirror that is the place from where early reflections will come.

    Angle of your monitors can change from which directions will the early reflections will be stronger, but it shouldn't affect the spot from where the sound bounces. Anyway unless you're a mummy or a vampire (sleeping in wooden coffin or sarcophagus) your bed is absorptive enough, so placing absorbers behind it would not help that much.
     
  3. nezvers

    nezvers Beast

    Joined:
    Oct 5, 2010
    Messages:
    1,399
    Likes Received:
    36
    Trophy Points:
    48
    Location:
    Latvia, Riga
    You can do some experimentation too, play something (sine, purple noise, track) close one ear and with hand or something else try to find by blocking direction where is reflection is coming.
     
  4. AboutBlank

    AboutBlank Member

    Joined:
    Nov 27, 2009
    Messages:
    1,330
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Berlin, Germany
    Haha, thanks...

    I did the mirror thing and already marked the position but was unsure about the angled stuff.
    Problem is I did it with my girl and it was rather a task:)guh:), so the height measures are maybe a little off and I would like to just measure where my ears are and put the panels on axact this height.

    I wouldn't place the absorbers "behind" my bed but as low as possible. This would be worst case though. I would damage them, because yeah, it's my bed:saint:
     
  5. AboutBlank

    AboutBlank Member

    Joined:
    Nov 27, 2009
    Messages:
    1,330
    Likes Received:
    0
    Trophy Points:
    36
    Location:
    Berlin, Germany
    Yo, just to show my solution(if anybody strumbles across the thread):

    I used hook and loop tape to mount the panels on the wall, my wall is crappy as hell and this way it is more versatile.


    [​IMG]


    [​IMG]


    [​IMG]
     

Share This Page