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<blockquote data-quote="kickerlivinloud" data-source="post: 2805800" data-attributes="member: 552730">I wouldn&#039;t trust that calculator.&nbsp; I have found it to be way off from time to time.&nbsp; It also is spot on at&nbsp; times.&nbsp; Its just not constant.&nbsp; Here is an example...<a href="http://forum.realmofexcursion.com/showthread.php?t=23030" target="_blank">http://forum.realmofexcursion.com/showthread.php?t=23030</a>In the thread a person used it to get a 2.2@32HzHe had 42&quot;^2 of port with a port length of 44.75&quot;I did a similar design a while back and it looked like this...<img src="http://i162.photobucket.com/albums/t246/Kickerlivenloud/Black%20Mirror%20Designs/BMD1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />As you can see the port area is the same and the volume is very close but, the port length isn&#039;t even close.&nbsp; Not by a long shot!Also if you take the info giving my the online calculator and add it all up, its doesn&#039;t match.&nbsp; I explained everything the best I could in the thread.I just don&#039;t trust online calculators.&nbsp; That my, I like to do it with pen, paper and a calculator.&nbsp; That why I know its right.Jon</blockquote>

[QUOTE="kickerlivinloud, post: 2805800, member: 552730"] I wouldn't trust that calculator. I have found it to be way off from time to time. It also is spot on at times. Its just not constant. Here is an example... [URL="http://forum.realmofexcursion.com/showthread.php?t=23030"]http://forum.realmofexcursion.com/showthread.php?t=23030[/URL] In the thread a person used it to get a 2.2@32Hz He had 42"^2 of port with a port length of 44.75" I did a similar design a while back and it looked like this... [IMG]http://i162.photobucket.com/albums/t246/Kickerlivenloud/Black%20Mirror%20Designs/BMD1.jpg[/IMG] As you can see the port area is the same and the volume is very close but, the port length isn't even close. Not by a long shot! Also if you take the info giving my the online calculator and add it all up, its doesn't match. I explained everything the best I could in the thread. I just don't trust online calculators. That my, I like to do it with pen, paper and a calculator. That why I know its right. Jon [/QUOTE]

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