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<blockquote data-quote="kicker06" data-source="post: 2667759" data-attributes="member: 567398">Let me start over, since I realize all these free enclosure calculators are WAY off.I will be running a 15&quot; Fi Q on a 1200wrms in my trunk car, with sub facing UP and Port Backwards.&nbsp; I want 4.0 cubic feet after port and sub disp, tuned to 32hz w/ 65sq&quot; of port.I want the box to be 30&quot; long and 14&quot; high, my max width is 30&quot; though.Here is what I came up with so far, but I cannot figure out the second port length for the correct tuning.External Dims: 24&quot;w x 30&quot;d x 14&quot;h Internal Dims (using .75&quot; wood) : 22.5w x 28.5d x 12.5h Internal Volume includ. port disp = 4.638 Port 1 = 5.25&quot; w x 12.5&quot; h x 24&quot; d Port 1 disp = 0.9 cu ft Port 2 = 5.25&quot; w x 12.5&quot; x&nbsp; ?And that is where I got stuck.I need the depth and height to be the same, but the width can be changed around.If you could help, that would be awesome!Thanks man!</blockquote>

[QUOTE="kicker06, post: 2667759, member: 567398"] Let me start over, since I realize all these free enclosure calculators are WAY off. I will be running a 15" Fi Q on a 1200wrms in my trunk car, with sub facing UP and Port Backwards. I want 4.0 cubic feet after port and sub disp, tuned to 32hz w/ 65sq" of port. I want the box to be 30" long and 14" high, my max width is 30" though. Here is what I came up with so far, but I cannot figure out the second port length for the correct tuning. [B]External Dims: 24"w x 30"d x 14"h[/B] [B] [/B] [B]Internal Dims (using .75" wood) : 22.5w x 28.5d x 12.5h[/B] [B] [/B] [B]Internal Volume includ. port disp = 4.638[/B] [B] [/B] [B]Port 1 = 5.25" w x 12.5" h x 24" d[/B] [B] [/B] [B]Port 1 disp = 0.9 cu ft[/B] [B] [/B] [B]Port 2 = 5.25" w x 12.5" x ?[/B] And that is where I got stuck. I need the depth and height to be the same, but the width can be changed around. If you could help, that would be awesome! Thanks man! [/QUOTE]

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