First build of Sub Box

I ran your dimensions and came up with a net internal volume of 0.396 cu ft. using 0.5" (1/2") MDF in the calculation. Like esmith69 said though, you also have to factor in the displacement of the woofer (and any ports or bracing) to find the gross internal volume. I couldn't find any specs from Kenwood on the recommended enclosure size or displacement. I could be wrong, but from what I've seen I was thinking a net of around 0.30 cu ft. Net Internal Volume: The total internal volume of an enclosure (not including the sub displacement, port, or bracing). This is usually what the manufacture's will recommend as the "Optimum Internal Volume" for a specific sub. Gross Internal Volume: When you're designing an enclosure, you have to factor in the volume (in cu ft.) of the sub (displacement), ports, and bracing. Then add that amount to the Net Internal Volume to get the Gross Internal Volume. This is the Total Internal Volume that you need to achieve in order to have the correct (or recommended) Net Internal Volume. "Net Internal Volume" + "volume of all items inside the enclosure" = "Gross Internal Volume" or "Gross Internal Volume" - "volume of all items inside the enclosure" = "Net Internal Volume" After you have calculated the required Gross Internal Volume, you have to start factoring in the thickness of your building material (0.5" MDF, 0.75" MDF, 1"MDF, etc...) That's where the online calculators come in handy, because they allow you to easily (and quickly) change the External Dimensions to achieve the desired Gross Internal Volume. I am new to enclosure building myself (I had to learn quite a bit!) but from what I've seen 0.75" (3/4") MDF is usually the minimum recommended size for 10" and larger subs. 0.5" (1/2") can tend to flex and cause distorted sound. But I guess its ok for an 8" sub.Squirrel

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