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<blockquote data-quote="Toxic Tuan" data-source="post: 6738069" data-attributes="member: 558678">Tommy,I have always respect you as a fellow competitor and a person of knowledge.&nbsp; But aren&#039;t you aware that the port is a tunnel or a pipe?&nbsp; It is.&nbsp; I have results of perfect port ratios.&nbsp; This doesn&#039;t come from theories, but rather from long and various testing.&nbsp; Some follow theories and some don&#039;t.Let me give a good example:&nbsp; two enclosures, both have the same volume port area and port lenght...but because of the port orientation...one is louder than the other.&nbsp; The pito tube tests allows me to measure precisely and allow me to see the internal flow.&nbsp; &nbsp; The results also help me predict the next design I ever do.&nbsp; Also, the pressure test also allows me to measure the turbulence and allow me to see any leaks due to contruction.&nbsp; I surely don&#039;t do it for every enclosure, but every now and then.Have any of you guys ever tested the golden ratio for a sealed enclosure?&nbsp; I&#039;m sure most of you have no idea how it works.&nbsp; I&#039;ve tested it myself to understand how it works.Everybody has a right to be skeptical since there are so much bs information out there.&nbsp; I never believe anything I hear or read until I&#039;ve personally tried it or tested it myself.&nbsp; That&#039;s the reason why I have a few audio companies paying me a good amount of money to do r&amp;amp;d and prototyping for them.Tuan</blockquote>

[QUOTE="Toxic Tuan, post: 6738069, member: 558678"] Tommy, I have always respect you as a fellow competitor and a person of knowledge. But aren't you aware that the port is a tunnel or a pipe? It is. I have results of perfect port ratios. This doesn't come from theories, but rather from long and various testing. Some follow theories and some don't. Let me give a good example: two enclosures, both have the same volume port area and port lenght...but because of the port orientation...one is louder than the other. The pito tube tests allows me to measure precisely and allow me to see the internal flow. The results also help me predict the next design I ever do. Also, the pressure test also allows me to measure the turbulence and allow me to see any leaks due to contruction. I surely don't do it for every enclosure, but every now and then. Have any of you guys ever tested the golden ratio for a sealed enclosure? I'm sure most of you have no idea how it works. I've tested it myself to understand how it works. Everybody has a right to be skeptical since there are so much bs information out there. I never believe anything I hear or read until I've personally tried it or tested it myself. That's the reason why I have a few audio companies paying me a good amount of money to do r&d and prototyping for them. Tuan [/QUOTE]

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