Reply to thread

Message

<blockquote data-quote="Trixter" data-source="post: 1988531" data-attributes="member: 542668"><p>when you talking about box volume, it should be the net volume, that is the internal volume (not counting the mdf the box is made of) subtract sub and port displacement. the area of a port is it&#039;s opening. you should keep a 9:1 ( some say 8:1) width to heigth ratio. once you have your area, you can then find your length to tune it to the desired freq. once you have your correct length then you need to find the total volume of the port, including the mdf that it is made of. if it shares a common wall with the box you don&#039;t need to count that since you already did when getting you initial volume, same goes with the length. ( the 3/4&quot; at the front of the box/port) once you have the port&#039;s volume displacement you subtract that from your box&#039;s volume to get the net volume. now that you have a new box volume, you&#039;ll need to refigure you port&#039;s length, using your new net volume, to get an acurate port length. hope i didn;t confuse you more:crazy:</p></blockquote><p></p>

[QUOTE="Trixter, post: 1988531, member: 542668"] when you talking about box volume, it should be the net volume, that is the internal volume (not counting the mdf the box is made of) subtract sub and port displacement. the area of a port is it's opening. you should keep a 9:1 ( some say 8:1) width to heigth ratio. once you have your area, you can then find your length to tune it to the desired freq. once you have your correct length then you need to find the total volume of the port, including the mdf that it is made of. if it shares a common wall with the box you don't need to count that since you already did when getting you initial volume, same goes with the length. ( the 3/4" at the front of the box/port) once you have the port's volume displacement you subtract that from your box's volume to get the net volume. now that you have a new box volume, you'll need to refigure you port's length, using your new net volume, to get an acurate port length. hope i didn;t confuse you more:crazy: [/QUOTE]

Verification