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    fast4door's Avatar
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    Help Me!!

    I am in the mists of making a new Slot vented box for my 13w7. I have foung out the exact dimensions i would like now i just need to figure out how to tune ports!!
    The sizes are as follows: External 36"Lx16"Hx18"W and Internal: 33"Lx13"Hx15"W.
    I'm going to use 2 pieces of 3/4" MDF fastned togeather to make 1 1/2". These dimensions given are exact so the box will fit in my trunk. The interior freq responce in around 73 hz. i would like to have it tuned at about 35- 37 hz. Any input would be greatly appriecated!!







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    Re: Help Me!!




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    Re: Help Me!!

    I guess what my real question is, is what are the calculations used to find freq? I will really apprieceate any help!!




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    Re: Help Me!!

    35hertz=18( the hieght of box)x2x15.50

    37hertz=18x2x13.25




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    Re: Help Me!!

    Quote Originally Posted by Jayson Hisel
    35hertz=18( the hieght of box)x2x15.50

    37hertz=18x2x13.25
    The inside dimensions are 33"Lx15"Wx13"H
    The outer dimensions are 36"Lx18"Wx16"H
    How did you get these dimensions?
    Also what would be the best tuning for the 13w7 in this size box?
    I will be powering it with a ORION 2500D!!
    The box needs to stay that size for exact fit in my ride!!
    Anybody with any input??




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    Re: Help Me!!

    Quote Originally Posted by fast4door
    The inside dimensions are 33"Lx15"Wx13"H
    The outer dimensions are 36"Lx18"Wx16"H
    How did you get these dimensions?
    Also what would be the best tuning for the 13w7 in this size box?
    I will be powering it with a ORION 2500D!!
    The box needs to stay that size for exact fit in my ride!!
    Anybody with any input??




    you said you need a port and thats what you want it to be tuned @ so i gave you two diffrent slot ports i used your dimensions and thats the correct ports yes they work on w7s i have installed w7's before but if you dont belive me its kool with me iam just trying to help you out




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    Re: Help Me!!

    Hey man its not that I dont believe you. Its that where you state
    35hertz=18( the hieght of box)x2x15.50
    37hertz=18x2x13.25
    I didnt think you colu have a port that is the same size as one of the dimensions!!
    If Im wrong correct me! Also I shoul post that I will be using 1.5" MDF. So would the port need to be 15x2x15.5?
    Please let me know!!!
    Thanks for your help!!




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    Re: Help Me!!

    **** 1.5" what the hell are ya gonna have in there?



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    Re: Help Me!!

    1 13w7 being fed 2500 watts. I have a 1" MDF box right now and it flexs like crazy when Im playing just sine waves. So i figured that I would make it 1.5", Also doesnt seem like any one would be able to take it. THe box I have now weights in at just over 150lbs w/woofer!! Its so heavy!!




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    Re: Help Me!!





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