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Discussion Starter #1
I have 2 JL Audio 12w6v2-D4's. I have BassBox 6 Pro to help me determine the correct measurements of my box. According to it, the dimensions for a sealed enclosure are 32.05(W) x 10(H) x 12.5(D) using 3/4" MDF. This gives the box a total internal volume of 1.653 cu. ft.

However, JL Audio's manual for a single sub states dimensions of 18(W) x 14(H) x 12.75(D) will give you 1.25 of volume. For 2 subs, just double everything. When I calculate that, I don't come close to what BassBox recommends. So what's going on here?
 

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the only thing you need to double would be the width.

that would be a SUPER huge box if you doubled height and depth also.

measurements should be 36 x 14 x 12.75 i would think which would be 2.81 cubes
 

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Hmm.... well, seeing as I trusted what BassBox said, the box is already built according to their recommendations and it sounds flat. :(
 

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if it came up with 1.6xx vs recommended 1.25.. put some 2x4's inside the box.

what amp? are you running bridged mono or stereo? If stereo did you install a divider between the woofers? what kind of car? where & how is the box mounted? what kind of music?

all are important in helping you get past "flat"...

*edit* also remember that some design programs are "net" & INCLUDE the volume the woofer displaces (JL's recommended boxes are this way) & other programs are "gross" & you have to subtract the voulme of the woofer from the overall box volume to get net yourself.

I believe JL gives woofer displacement specs.

Rob
 
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