SPL Levels using Dual Subs

Discussion in 'Subwoofers' started by Edgeyboy, Mar 2, 2013.

  1. Edgeyboy

    Edgeyboy
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    I have just bought a second B&W DB1 for my Classe / B&W 800 Series system.

    When I set the levels using an SPL Meter, do I set the level of the second (new) sub the same as the other sub and the speakers (75db) ?

    Or, should both subs be set lower (as I am using two) ?

    Thanks Tom
     
  2. Ashmanuk

    Ashmanuk
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    I would set all to 75db speakers and subs, and test to see what you think, are both subs taken from one sub output? Or do you have each sub connected individualy?
    i. e two sub LFE outputs.
    Bearing in mind put two subs in a room and you will get more unforced gain about 4-6db or more so you would need to adjust the volume of both subs on your processor back down to show 75db
     
  3. Edgeyboy

    Edgeyboy
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    Each sub is connected individually to my Denon AVPA1 Processor which has 3 sub outputs. Thanks Tom
     
  4. Ashmanuk

    Ashmanuk
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    No auto EQ is there? Well adjust each to 75db and see what you think, if to much them use the trim on the AVP to lower them as a whole.
    Two subs at 75db each will have roughly 6db gain total.
     
  5. Darkmatter21

    Darkmatter21
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    I turn both mine on and level there combined output to 75db. This means the gain goes from 10 oclock on each sub to 9 oclock. Seems to be fine to me.
     
  6. scottthehat

    scottthehat
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    if you want both subs to be about 75db total output aim for about 72db each.
     

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