ChevyBoy95 Posted October 16, 2013 Report Share Posted October 16, 2013 Curious to what REALLY makes a circle shaped power (pvc/aero/sonotube) more efficient that a square port (slot). Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
Pioneerchuck Posted October 16, 2013 Report Share Posted October 16, 2013 I would assume that the edges of a square port break up the sound waves, whereas the flow of a circle helps keep the sound wave intact. Link to comment Share on other sites More sharing options...
Chance_P Posted October 16, 2013 Report Share Posted October 16, 2013 A round port has less surface area in contact with the moving air when compared to a square port of the same port area and length, thus less resistance. Link to comment Share on other sites More sharing options...
KMS Posted October 16, 2013 Report Share Posted October 16, 2013 Well then, aero box is what I should make now. Alpine PDX-V9 Morel Tempo 6 Alpine SBR-S8-4 Alpine CDE 149BT Link to comment Share on other sites More sharing options...
STEALTH808 Posted October 16, 2013 Report Share Posted October 16, 2013 TEAM SUNDOWN HAWAIIHAWAIICARAUDIO.NET 150Db Club 160Db club in the future I see krakin as a threat Link to comment Share on other sites More sharing options...
CleanSierra Posted October 16, 2013 Report Share Posted October 16, 2013 A round port is ONLY more efficient than a rounded over slot port if it has a flare. Preferably a flare at both ends, according to the Loudspeaker Cookbook and multiple tests performed. Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
CleanSierra Posted October 16, 2013 Report Share Posted October 16, 2013 I prefer round ports due to the flexibility and being able to get the port area I want in less real estate. I've had good luck so far and being torn anything into a leading wall is nice Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
Skullz Posted October 16, 2013 Report Share Posted October 16, 2013 The corners in slot and square ports are dead areas that the air doesn't move to so a round port allows all of the air to travel through it. Plus you have more surface area which creates friction for the air to pass through which slows it down, but many times it is just easier to make a slot port than to try and find a size in round ports suitable for use. 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
bdog Posted October 16, 2013 Report Share Posted October 16, 2013 i understand this more than port velocity . REP Link to comment Share on other sites More sharing options...
STEALTH808 Posted October 16, 2013 Report Share Posted October 16, 2013 there is a difference between "round" and "aero". TEAM SUNDOWN HAWAIIHAWAIICARAUDIO.NET 150Db Club 160Db club in the future I see krakin as a threat Link to comment Share on other sites More sharing options...
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