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<blockquote data-quote="ciaonzo" data-source="post: 6454608" data-attributes="member: 607015">This is the answer I was looking for but not so I could flame you. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifI&#039;ve noticed this trend on this and many other sites and I see many people perpetuating the information that this is an aero. It is not. It is a round vent, in this case manifested by a PVC pipe. A round vent is simply that; round.Aero is short for aerodynamic. Aerodynamic indicates a low drag coefficient. A round vent cut flush with the surface of the MDF, or whatever you&#039;re building with, is not aerodynamic at all. A flared end is what constitutes the term &quot;aero&quot; and facilitates the aerodynamics for a round vent, or any other cross section for that matter.This is an &quot;Aero&quot;:<img src="http://www.subwoofer-builder.com/port-flares/effective-length.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="ciaonzo, post: 6454608, member: 607015"] This is the answer I was looking for but not so I could flame you. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] I've noticed this trend on this and many other sites and I see many people perpetuating the information that this is an aero. [B]It is not[/B]. It is a round vent, in this case manifested by a PVC pipe. A round vent is simply that; round. Aero is short for aerodynamic. Aerodynamic indicates a low drag coefficient. A round vent cut flush with the surface of the MDF, or whatever you're building with, is not aerodynamic at all. A flared end is what constitutes the term "aero" and facilitates the aerodynamics for a round vent, or any other cross section for that matter. This is an "Aero": [IMG]http://www.subwoofer-builder.com/port-flares/effective-length.gif[/IMG] [/QUOTE]

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