Missing parameters

Discussion in 'Archived Threads 2001-2004' started by Shawn Solar, Aug 25, 2002.

  1. Shawn Solar

    Shawn Solar Supporting Actor

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    I have a friend that, after hearing about my atempt at DIY, wants to do something similar. He has 8 15" HX2 rockford fosgate 15's and wants to take 4 of them for a project. Problem is I don't have complete parameters for the woofer here is what I got:
    rockford HX2 15"
    fs 22hz
    vas 4.45cuft(126L)
    x-max 19mm
    Pe 1000watts
    voicecoil [email protected]

    This is all I have for this woofer. any help. I figured just looking at the parameters something in the niegbourhood of 4-5cuft ported tuned to 20hz or so. He already has these subs I told him to use 2 at the most and sell off the other two. I also can't see him needing more then 500watts as it has a similar x-max as a shiva or tempest, which would also best this $500 15" woofer. Kind of sad really these woofers weigh 40lbs and look pretty cool.
     
  2. Chris Eriksen

    Chris Eriksen Stunt Coordinator

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  3. Shawn Solar

    Shawn Solar Supporting Actor

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    Thanks. Those are where I got my parameters from. For unibox, though there are quite a few missing. I don't know how to calculate them myself. I should of added that these are going to be for home use.

    As for Anthony's link it sounds viable but I'd then have to invest in a digital VOM. I do however have an anaog one. I am pretty sure based on the parameters I do have and Rockfords recomendation a 5cuft box tuned to 20hz should be alright. Though I am unsure on max power and spl it should perform pretty similar to a tempest in a smaller box and a little less low end.
     

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