Need some help with AV-12

Discussion in 'Home Theater Projects' started by Jonathan T, May 10, 2003.

  1. Jonathan T

    Jonathan T Second Unit

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    I'm using WinID alpha to model a Stryke AV-12 in a sealed 2 ft3 cube. Using the SPL and cone excursion function, I've found that 250 watts will push the cone beyond it's Xmax at about 31.25 hz and the -3db point is about 43.15hz. Could someone also check this so I can see if I've getting the correct numbers.
     
  2. Robert_J

    Robert_J Lead Actor

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    If you go to File, Options and look at the settings for Cone Excursion you will see it is P-P. Don't worry about it until you get close to 46mm on the graph.

    -Robert
     
  3. Jonathan T

    Jonathan T Second Unit

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    Ok, thanks!
     
  4. Jonathan T

    Jonathan T Second Unit

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    That changes a lot. Looks like a Rymthmic Audio plate amp won't cut it.
     
  5. Frank Carter

    Frank Carter Screenwriter

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    If you click on the unit(p-p or peak) in the options, you can change to however you want. If I change mine to p-p, then my numbers match yours.
     
  6. Jonathan T

    Jonathan T Second Unit

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    Ok, frank, thanks!
     
  7. Jack Gilvey

    Jack Gilvey Producer

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    According to Unibox, it would take about 500 watts to reach Xmax at 20Hz in 58 liters.

     
  8. Jonathan T

    Jonathan T Second Unit

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    According to WinISD, it would take about 600 watts to bottom it out at 20hz, but that's trivial.

    And yes, I meant that the Rymthic audio amp won't be able to bottom the sub out. But then again, I'm looking at the SPL numbers at 380 watts, and they are still impressive. Now that I think about it, I might just get the Rymthic amp that has the dampening, crossover and volume control right onboard, much cheeper than a rack amp that can put out 700+ watts into 4 ohmns RMS un-bridged.
     
  9. Jack Gilvey

    Jack Gilvey Producer

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    "Bottoming out" an AV12 implies about 30mm excursion. Xmech (mechanical limits), not Xmax (linear excursion). I wouldn't aspire to doing it in any event, 380 watts should be great.
     
  10. Jonathan T

    Jonathan T Second Unit

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    O, thanks, didn't know that. 380 watts should do fine, it's for music only anyway.
     

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