Peerless XXLS12 Subwoofer Build

Discussion in 'DIY Speaker & Subwoofer Building' started by vinny914, Feb 28, 2014.

  1. vinny914

    vinny914
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    Hi Guys,

    I was wondering if anyone can help me. I'm looking to build a friend of mine a small-ish subwoofer.

    He already has 2x Peerless XXLS12 P830845 Sub. Looking at a compact 1 box dual design.

    Does anyone have a WiniSD file for this? Just wondering what subwoofer box size I would need to reach a QTC of 0.6.

    I've found specs from: http://www.tymphany.com/files/XXLS-P830845 Rev1_0.pdf but am having trouble inputting the data.

    Thanks
     
  2. scottthehat

    scottthehat
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    have you got win your self vinny,
    remember its this way to get it to work.

    mms
    fs
    sd
    bl
    re
    qms
    rms(pe)
    xmax.
     
  3. vinny914

    vinny914
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    Hi Scott, thanks for your help.

    I have inputted the data as stated above. However I didn't have the RMS figure, but WinISD had calculated a figure for it.

    However it must be wrong as a dual sub design had a box size of 1250L ;)

    Any idea?

    Thanks
     
  4. scottthehat

    scottthehat
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    Hi Vinny the rated power looks like 175w RMS I would expect it to need a min of 15l.
     
  5. vinny914

    vinny914
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    I'm looking at a 40-50L dual design. But can't work out the QTC value of the subs due to WinISD not playing ball.

    I'm using the Alpha version should I use the older one?
     
  6. scottthehat

    scottthehat
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    yeah something not right there vinny, i get a single needs a 150l cab.
     
  7. scottthehat

    scottthehat
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  8. scottthehat

    scottthehat
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  9. vinny914

    vinny914
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    Thanks for your help Scott. Seems a very odd subwoofer. I may have a chat with my friend and advise him on looking at getting 2 new cones. Those cab sizes defeat the purpose on having a small dual design subwoofer.
     
  10. scottthehat

    scottthehat
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    If he wants small look at the eminence driver I think that can go in small cabinets and not need to much power other than that the fi drivers but they need a lot more power.

    The only other thing is you could stick them in a small cabinet and see how the sound they won't need massive amounts of power.
     
  11. scottthehat

    scottthehat
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    vinny this driver is great for a small cabinet and doesnt need alot of power, only thing is it comes in 4 and 6ohm.
    Eminence Lab 12C High Power 12" Subwoofer 4 Ohm | 290-668

    if you stick to of these in a 60l cabinet they would only need 550w rms and have a q of 0.65.

    77l would give you a q of 0.601 and they would need about 400w rms.

    so you should be able to wire 2x 4ohms to 8ohm and there pleanty of amps that will give them bags of power for a 8ohm load.

    anf for a q of 0.7 you can go as small as 50l.
     

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