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Gatorcity

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  1. so...i just bought a fat fancy hamster...put it in a 20 gallon aquarium and now i need a stand built for it...the only real "woodworking" i have ever done is with mdf for sub boxes...never really did any cabinetry type stuff before...so i need some suggestions on wood types and sizes...if some ppl need a design or dimensions im sure i can put them up...but i more interested in the types and sizes...thanks!!!

  2. I found this equation....is it the right one to use???

    Fb - is the tuning frequency of your enclosure in Hertz.

    Lv - is the length of your port in inches.

    R - is the inside radius of your vent tube.

    Vb - is the internal volume of your enclosure in cubic inches. To convert cubic feet to cubic inches, multiply by 1728.

    If you want to use multiple ports, divide your enclosure volume by the number of ports you want to use, then use the result of this calculation as your Vb in the formula below to find out how long each port should be (a tip from JL Audio™).

    LVFormul.gif

    If you want to calculate square vents, the formula below will give you the value of R to use in the formula above.

    SqConvrt.gif

    In the formula above, a is the area of your square vent (height x width), and (Pi) is approximately 3.141592

    and if it is right, and i want to use multiple ports, does each port have to be the specified length? for example...if i want 2 4" aero ports and the equation said i needed a length of 20 inches for correct tuning...would that be per port? or 2 ports cut to 10 inches???

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