Reply to thread

Message

<blockquote data-quote="Trixter" data-source="post: 2928921" data-attributes="member: 542668">if your box is already built, then you need to find the total displacement of the port and sub(s) and subtract this from the internal total volume.you port displacement should be 153.66cu&quot;(you don&#039;t count the front baffle, which will make the lenght 6.66 - .75 = 5.91. the height is 13. the width needs to include the inner port wall, so 1.25 + .75 = 2. that concludes:&nbsp; 5.91 x 13 x 2 = 153.66)when using the formula, use the cu&quot; the driver requires. find the port length. find it&#039;s displacement, like i showed, and add driver displacement to it. add this displacement to you driver&#039;s required volume. this will be you total internal volume.16.25sq&quot; of port is awefully small for two subs and a box that size. i do like 30-40 minimum.</blockquote>

[QUOTE="Trixter, post: 2928921, member: 542668"] if your box is already built, then you need to find the total displacement of the port and sub(s) and subtract this from the internal total volume. you port displacement should be 153.66cu" (you don't count the front baffle, which will make the lenght 6.66 - .75 = [B]5.91[/B]. the height is [B]13[/B]. the width needs to include the inner port wall, so 1.25 + .75 = [B]2[/B]. that concludes: 5.91 x 13 x 2 = [B]153.66[/B]) when using the formula, use the cu" the driver requires. find the port length. find it's displacement, like i showed, and add driver displacement to it. add this displacement to you driver's required volume. this will be you total internal volume. 16.25sq" of port is awefully small for two subs and a box that size. i do like 30-40 minimum. [/QUOTE]

Verification