Shiva in a 3cubic ft ported box

Discussion in 'Home Theater Projects' started by Kirstyn, May 19, 2003.

  1. Kirstyn

    Kirstyn Auditioning

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    Hey all, just a quick question for someone wiyh Shiva experience.I have a 3 cu ft box with 2,3 inch by 10 inch long ports and a blown driver. My question is whether a Shiva would perform well in this box or would I have to modify my box or just start from scratch and build a new box. I am powering it with the PE 250 watt amp and don't really want to build a new box unless the old one will not work out well. My main use is 100% HT.Thanx in advance for any and all assistance.
    Yours Greatfully K.R.
     
  2. JoelTW

    JoelTW Stunt Coordinator

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    I think Parts Express sells a 3 cubic ft box, ported, for their titanic driver...I suppose it would work out but I'm not going to say so because I'm a newbie [​IMG]
     
  3. Jack Gilvey

    Jack Gilvey Producer

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    By my rough calculations, those ports tune that box to ~32Hz and create a big 5dB peak at 42Hz. Not an alignment I'd recommend.
    I think it might be worthwhile to close off/stuff one port, that would result in something fairy close to the Adire alignment described in the Vented Shiva application notes from Adire. If the port isn't flared, you could replace it with the recommended Precision port if at all possible.
    No reason you couldn't also try it sealed just for fun, with both ports blocked off.
    Which PE amp is this?
     
  4. Kirstyn

    Kirstyn Auditioning

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    Thanks for the replies. It never dawned on me to try it sealed, I might have to try that idea. As for my amp - its the 250 watt plate amp from parts express with no boost.If I went with one port do you think that one 3 inch port would be big enough??Wouldn't I get alot of port noise??
    Once again thanks for your shared knowledge, it really cuts down on the guess work!!!

    K.R.
     
  5. Jack Gilvey

    Jack Gilvey Producer

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  6. Peter Jessee

    Peter Jessee Stunt Coordinator

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