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Vcw 124 box help

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Hey guys new here, got a quick question for you. I was gonna buy an fi ssd12 but then came across this subwoofer nvx vcw124. I've never heard of this brand but it doesn't look like a half bad sub, I wanna try it out cause it doesn't call for that big of a box but it has pretty much the same specs as the ssd 12. Now my question is for the vcw124 I've come up with a 1.84ft^3 box after sub and port displacement, with a 3 inch areo port that is roughly 16 inches long, a little less, that would give me around 22square inches of port area, so it should be tuned to 25hz like I want it. So my question to you guys is does this sound right or is the box too small or the port too small? I'm not an expert at all but they recommend tuning it to 25hz. Thanks

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