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    Noob Question...Sub Displacement

    looking at this spec sheet for the rsd 12 inch i don't see where it says sub displacement...Im trying to build a box and so i need to subtract the cubic feet by the sub displacement correct?

    Is it VAS ( it says .09405 cu M)?

    what is the term for sub displacement??

    thanks!







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    Re: Noob Question...Sub Displacement

    http://www.bcae1.com/spboxnew2.htm

    this website said u can approximate for a regular 12 inch woofer by subtracting .07...does that sound about right?




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    Re: Noob Question...Sub Displacement

    Sounds about right... R's are .071... They are a pretty good size too..




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    Re: Noob Question...Sub Displacement

    That should roughly do it.






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    Re: Noob Question...Sub Displacement

    It's not VAS. Vas is the suspension compliance equivalent air volume. If it's not specified 0.07-0.1 is a good estimate for a 12".




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    Re: Noob Question...Sub Displacement

    Quote Originally Posted by SQL4Life View Post
    looking at this spec sheet for the rsd 12 inch i don't see where it says sub displacement...Im trying to build a box and so i need to subtract the cubic feet by the sub displacement correct?

    Is it VAS ( it says .09405 cu M)?

    what is the term for sub displacement??

    thanks!
    i wouldnt worry about it. it wont effect your tuning (ported) or even a sealed box. its like a 4.0 cube box, versus a 4.07.

    but yes, most 12's average around .07 (less than 1/10th of a cubic foot)



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    Re: Noob Question...Sub Displacement

    yeah i decided with the .07...too bad did'nt have time to finish the box today




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