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Discussion in 'Audio & Electronics' started by TFIDDLE, Nov 26, 2011.

  1. joh408

    joh408 Full Access Member

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    Did you get the T/S for the sub?
     
  2. joh408

    joh408 Full Access Member

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    Modeled it with the T/S of the D2 Copper coil and cabin gain of our trucks. If you tuned at 36, you'd have a huge peak at 35. 38 Hz would have a big peak at 37 Hz. I would tune lower, towards 31 or 32, if you wanted 2 cubes and a flatter response for better SQ. If your T/S are a bit different, let me know and I'll model it up again
     
  3. TFIDDLE

    TFIDDLE VEEEE TEn

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    model these specs, i cant remember if it was copper or aluminum coil
    too. this is for aluminum coil
    12" D2:

    RE: 3.72 ohms
    Fs: 37.54 Hz
    Qes: 0.409
    Qms: 6.82
    Qts: 0.386
    Le: 2.8 mH
    Vas: 23.95 L
    BL: 24.07 NA
    Cms: 66.43 uM/N
    Mms: 270.43 g
    Sens: 86.74 dB 1w/1m
     
  4. joh408

    joh408 Full Access Member

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    What are your LPF and HPF settings at or going to be?
    And how many watts you gonna be pushing to it?
     
  5. TFIDDLE

    TFIDDLE VEEEE TEn

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    sub is a 1500 watt rms sub conservatively. I have a sax1200d on order which jacob clamped at 1200 watts after box rise (around 2 ohms final load is what it was clamped at) on 12.8v. so im guessing 1400-1500 area. I really dont know what im setting my lpf too yet.
     
  6. joh408

    joh408 Full Access Member

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    Heres the aluminum coil on 1000w:
    [​IMG]
     
  7. TFIDDLE

    TFIDDLE VEEEE TEn

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    wat program you using, and bump it up to 1200 for sure. not much difference but will be a little
     
  8. joh408

    joh408 Full Access Member

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    Copper on 1500w:
    [​IMG]
    And I'm using Jeff Bagby's Excel macro called Woofer Box and Circuit Design
     
  9. TFIDDLE

    TFIDDLE VEEEE TEn

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    hmm so 31 peaks at 29??
     
  10. joh408

    joh408 Full Access Member

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    Aluminum on 1500w:
    [​IMG]
    Blue is 36 hz
     

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