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Subwoofers
Aero vs. Slot port....not sure which to go with help me decide, this will be fun, just look!!
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<blockquote data-quote="Lojze Carman" data-source="post: 8674941" data-attributes="member: 676693"><p>5" aeroport is spot on for one 12" subwoofer.</p><p> Two different diameters were listed because one in inner pipe diameter and the other is outer pipe diameter - the difference is PVC pipe thickness.... Important is inner port diameter - the effective crossection.</p><p> And yes - standard 5" pvc pipe fits exactly to outer PVC pipe diameter, so you can change PVC pipe lenghts as much as you need and the cost is minimal.</p><p></p><p> Important is the air speed trough the port and it should not be more than 20-30 m/sec - if air speed is higher, port noise will probably accure. With bigger pipe cross section the air speed will be lower, but port lenght will need to be longer.</p><p></p><p>You need to shorten your PVC pipe for a half of height of each aeroport ending used (if the complete aero ending is 5 cm high and you use one on each side of the port you will need to shorten your pipe for approx 5 cm to obtain calculated tunning, otherwise you will end up with lower than predicted tuning and with lower acoustic power.</p></blockquote><p></p>
[QUOTE="Lojze Carman, post: 8674941, member: 676693"] 5" aeroport is spot on for one 12" subwoofer. Two different diameters were listed because one in inner pipe diameter and the other is outer pipe diameter - the difference is PVC pipe thickness.... Important is inner port diameter - the effective crossection. And yes - standard 5" pvc pipe fits exactly to outer PVC pipe diameter, so you can change PVC pipe lenghts as much as you need and the cost is minimal. Important is the air speed trough the port and it should not be more than 20-30 m/sec - if air speed is higher, port noise will probably accure. With bigger pipe cross section the air speed will be lower, but port lenght will need to be longer. You need to shorten your PVC pipe for a half of height of each aeroport ending used (if the complete aero ending is 5 cm high and you use one on each side of the port you will need to shorten your pipe for approx 5 cm to obtain calculated tunning, otherwise you will end up with lower than predicted tuning and with lower acoustic power. [/QUOTE]
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Aero vs. Slot port....not sure which to go with help me decide, this will be fun, just look!!
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