Desktop Bookshelf Speaker Placement

Discussion in 'Audio Visual' started by eastley, May 15, 2017.

  1. Stooge007

    Stooge007 Member

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    big difference, right there
     
  2. OP
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    eastley

    eastley Member

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    Yeah, wanted something small, powerful and cheap..

    No use getting a Sub half the size of my desk for bookshelfs etc, wanted to keep it all minimal.

    Came across the Wharfedale Diamond SW150BAV in reviews, saying for it's money, it cannot be touched. I thought Perfect!!!

    Grabbed it today for $400, could of waited for a 40% off JB sale for cheaper but meh.
     
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    eastley

    eastley Member

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    So, now this is a bit beyind me,,

    Dali Zensor 1: 53 - 26,500 Hz

    Wharfedale SW-150: Frequency Response 35Hz to 110Hz with a Low Pass filter range 35–85Hz (10Hz steps).

    So what Crossover do I set in the X7 and what do I put on Subwoofer?
     
  4. Stooge007

    Stooge007 Member

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    can you adjust the slope of the x-overs? (usually 6db, 12db etc.)

    i'd aim for a High Pass Filter (i.e. filters out the sub bass) of ~ 90hz for the Dali's and a Low Pass Filter (i.e. filters out mid bass/treble) of ~ 80hz for the sub

    then have a bit of a play to see what sounds good to you
     
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    eastley

    eastley Member

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    All i can adjust is what hz and below is sent to the subwoofer.

    A single adjustment.

    Just went to work. Will take screen shots when i get home.
     
    Last edited: May 19, 2017
  6. OP
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    eastley

    eastley Member

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    I know i should set crossover to 10Hz above speaker minimum, the issue i have is though, does the small speaker selection in software limit the lower frequency?

    Edit: Crossover set to 65Hz.

    Testing Subwoofer, it can do 32hz before dropping, so that is below it's specs.
     
    Last edited: May 19, 2017
  7. OP
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    eastley

    eastley Member

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    Still not sure on cross over..

    Some sites are saying 10 Hz above what speakers can produce, in my case the speakers can do as low as 53 Hz, so around 63Hz is ok.

    Then some sites are saying why stress your speakers that much? Let them concentrate on the upper mids/highs. So set them a tad higher. In my case that would probably be around the 80hz mark.
     
  8. samo

    samo Member

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    Start your crossover at 80hz. Sound starts to become omnidirectional at this point, which is exactly what you want from a sub. From this point you can adjust accordingly to your personal taste.

    The Dali only has a 5" woofer so it's not moving a lot of air. Make sure the sub volume isnt too high either otherwise you will just end up with boomy, over powering bass.
     
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    eastley

    eastley Member

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    Yeah sounds good at 80Hz..

    Question however.

    The Sub can go 35Hz - 110Hz, but the switch maxes out at 85Hz.

    So basically I have to set the switch to 85Hz and change the Amp settings, and I can never use above 85Hz correct?
     
  10. Stooge007

    Stooge007 Member

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    all depends on the slope of the x-over, but i'd imagine it's a gentle slope (6db) so rolls off, rather than a complete stop at 85hz

    see Figure 8 here - http://sound.whsites.net/articles/fadb.htm
     
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    eastley

    eastley Member

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    Thanks for help everyone.

    Settled for 65Hz cross over after a lot of listening, it got rid of a bit of boom which is what I prefer.

    Also moved sub woofer to corner on a wooden floor, it was under the desk pushed against one side. The Corner is still not ideal, about 20cm space around it, but I also had these 50x50x12 (mm) vibration reducing and sound dampening pads I stuck under each of the feet to reduce the vibration through the floor, works a treat and improved it heaps.

    Edit: Super glued two of the pads together to make is a 24mm rise.. Sounds even better!!

    https://www.bunnings.com.au/whites-50-x-50-x-12mm-anti-vibration-squares-8-pack_p3961977

    Since it is only under the feet, I better not go higher.
     
    Last edited: May 21, 2017
  12. Stooge007

    Stooge007 Member

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    a lot of the time, sub being in a corner is a good thing, you'll normally get a bit of gain there due to the walls

    but sometimes you need to try the sub in different spots to find the "sweet spot"
     
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    eastley

    eastley Member

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    Here is my $4 Subwoofer riser..

    Sound/vibration pads, lol..

    [​IMG]
     
  14. Stooge007

    Stooge007 Member

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    whatever works :thumbup:
     
  15. Steak Face

    Steak Face Member

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    Good find on those vibration pads.

    I see they also come on 200mm squares, I might have to get some for my sub.
     
  16. OP
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    eastley

    eastley Member

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    I actually got them because I have the KS9000 TV with a sound bar at front but the sound bar won't fit because of the TV stands, two of these at each end and in the middle raised it above the tv stand, lol.
     

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