Where do I start? With Pics....

Discussion in 'DIY Discussion' started by smoove, Aug 27, 2009.

  1. smoove

    smoove

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    Hi there, decided to start helping the the accoustics of my room, bought some decent sound insulation rockwool of the web.

    I understand I need todo the whole mirror thing, but Is there anything else I should do appart from putting some panels on the side walls?

    From my seating position: (Agaisnt rear wall, roughly 6 foot to the speakers when off the wall).
    As you can see I'm looking down from my bed, this folds up into a sofa bed against the back wall.
    [​IMG]

    As you can see above the speakers theres a sloaping roof to the left:
    [​IMG]

    To the right of my seating position, the wall comes out slightly, from fireplace downstairs:
    [​IMG]

    Left wall with door just out of sight:
    [​IMG]

    Right wall:
    [​IMG]

    I have laminate flooring throught the room, but a large carpet underneath the speakers and will be sourcing granite slabs to help tighten up the bass.
     
    smoove, Aug 27, 2009
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  2. smoove

    UK Duty Paid

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    I think you are complicating things a bit for yourself

    Try experimenting with what you have first with set up on the speakers. toe in the speakers radically 45 -60 degree & move them out from there at different angles until you have what sounds best to you.

    (I would then try a largish thick attractive rug / carpet with an air gap behind it hanging on the wall to cosmetically brighten things up. ;) )
     
    UK Duty Paid, Aug 27, 2009
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  3. smoove

    smoove

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    Well i've bought most of the materials, so it would be a waste not to use it now. Plus i like abit of DIY.

    Where would I start?
     
    smoove, Aug 27, 2009
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  4. smoove

    smoove

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    Anyone?
     
    smoove, Aug 28, 2009
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  5. smoove

    DavidF

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    I'll getback to you when i've finished my shift.

    I applaud your enthusiam!
     
    DavidF, Aug 28, 2009
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  6. smoove

    DavidF

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    I think UK DP may have a point.

    As you probably know, the set up to aim for looks like equilateral triangle in plan view, so that the distance between the speakers is equal to the distance between EACH SPEAKER at the listening position.

    When listening you should ideally be able to view down the outside edge of each speaker.

    Make sure each speaker is level (I used a spirit level).

    Getting these factors pretty near will make big sonic differences.

    I know this doesn't answer your questions of room accoustics and I have limited knowledge. I just tried to get sound proofing on the first reflection points in my room. As suggested this could mean a rug or two on the floor and I attached cork sheeting to the walls in my place (experimentally), not pretty but its only me here, so there's no one to complain.

    Simon's your man for a more in depth answer on this one ;).

    Let us know how you get on!

    I see you are using pretty meaty stands (good) for your speakers. I would try to get these isolated from the floor using spikes, if not already.
     
    DavidF, Aug 30, 2009
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  7. smoove

    smoove

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    Well I've done that as best as i could already, so i want to take it to the next level...
     
    smoove, Aug 31, 2009
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  8. smoove

    DavidF

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    Let us know how you get on.


    :)
     
    DavidF, Aug 31, 2009
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  9. smoove

    scott_01

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    I'll start by saying I'm not an expert so don't take any of this as 100% gospel. I also don't know how much you know about acoustics.

    However, I would recommend you break down the process into the following categories:

    1. Gaining a basic understanding of the theories of room acoustics and of the available treatments (absorption / diffusion / bass trapping, equalisation etc).

    2.
    a. Identifying the areas of the frequency range which most need treatment​
    b. deciding how you intend to tackle them.​

    3. Building the treatments to place in your room.

    4. Testing and adjusting for best result


    Ideally undertaking some form of measurement during all these phases would be ideal. This could be via specialist software, frequency sweep CDs basic SPL meters etc.

    Assuming you have completed step 1 and are committed to physical treatment rather than EQ:

    What is your aim?

    a. To solve a particular acoustic problem

    b. To generally treat your room to get the best from your system

    If your aim is 'a.' then I'd primarily look at the pinkfish posts by 'Tenson'. If the aim is 'b.' Then look at them all.


    STEP 1

    These should help.

    http://www.pinkfishmedia.net/forum/showthread.php?t=49345

    http://www.pinkfishmedia.net/forum/showthread.php?t=49392

    http://www.audioholics.com/reviews/acoustics/realtraps/setup-measurement-and-analysis

    http://www.realtraps.com/index.htm

    http://www.ecoustics.com/Home/Accessories/Acoustic_Room_Treatments/Acoustic_Room_Treatment_Articles/

    STEP 2

    Now you will either know from listening what your problems are, or you will need to find out through measurement. Some measuring ideas are:

    http://www.pinkfishmedia.net/forum/showthread.php?t=67851

    As mentioned on the thread this probably isn't that accurate but it'll do for government work.

    http://www.cara.de/

    More prediction than measurement but useful anyway.

    http://www.etfacoustic.com/RPlusDSite/index.html

    There are other systems available and it is pricey but I found it very useful.

    Is this the kind of advice you are after?

    If so then I will expand on the other steps if you want
     
    scott_01, Aug 31, 2009
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  10. smoove

    RobHolt Moderator

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    You might also find the bass is better if you pull the sofa bed away from the back wall - even just a few inches will help.
     
    RobHolt, Aug 31, 2009
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  11. smoove

    smoove

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    Thats excellent, thanks very much, certainly took me in a different direction.

    I have now re-arranged my room so its better accousticly, hung up some curtains, started building some granite speaker bases, filled my speaker stands up and in the process of measuring and building my sound panels.

    Will update this thread soon!
     
    smoove, Sep 2, 2009
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  12. smoove

    scott_01

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    For your panels I would have a look at the Wickes high density insulation, easy to work with and each sheet is stiff enough to be used alone without wooden frames if you cover with cloth.

    However, as you've started, why not give this a go?

    http://www.positive-feedback.com/Issue16/lavigneroom.htm:D
     
    scott_01, Sep 2, 2009
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  13. smoove

    andyoz

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    andyoz, Sep 6, 2009
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  14. smoove

    SMEagol Because we wants it...

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    ...is that the inside of a Romulan Warbird? :D
     
    SMEagol, Sep 6, 2009
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  15. smoove

    gavman

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    all that just to lose bass extension

    something wrong there

    i was with him all the way until that

    if one wanted to design a room for a bass freak, how would it be different?
     
    gavman, Oct 5, 2009
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