Here is a bandpass I built for an Incriminator Audio LI 12. It is 1.5 cubes sealed and 1 cube ported around 47hz with 27 sq inches or port area. The sub should arrive tomorrow that is a 12W3v3 in the pic which sounds very good in that box with an extremely flat response from 30-70 but with little gain. The IA should have have more gain and upper end and it actually looks identical to the sealed response curve with a 5db gain from 30-65hz or so. It should have a ton of punch with all of the low end as well.
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