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  #1  
Old 08-14-2015, 01:41 AM
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Default psp port question

would having 2 ports on sub baffle and 2 ports on side baffle effect the way it sounds and create cancelation?...has anyone ever done this?
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Old 08-14-2015, 01:55 AM
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my current build is 4 4 inch aero's i cant fit 4 of them on the side of the box (which is where i wanted to port) so can i put 3 on side and 1 facing forward or 2 forward and 2 side?...with 3 open its tuned to 34hz with 4 open its tuned to 40hz for spl...but daily id only run 3 open (the side ones)
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Old 08-17-2015, 07:07 PM
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Hello?
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Old 08-17-2015, 07:37 PM
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You are definitely better off finding a way to fit them all facing the same direction.
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Old 08-17-2015, 07:45 PM
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Why not run one 8" aero
Or 2 6"
And just leave the tuning
Get something in the middle like 36-37hz
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Old 08-17-2015, 10:37 PM
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Cuz a single 8 inch aero made bye pshycoports is upwards of 200 and I don't want to just use 8 inch pvc ...and 2 6 inch ports would be way to much port area ...I will be running 2 12's on 4k...but the subs will be inverted so can I just stuff the 1 side of the box with ports?....the subs will be firing onto the side of the ports within 5 or 6 inches from them if I put them all on 1 side
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Old 08-17-2015, 11:14 PM
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2 6" ports isn't that much larger than 4 4" ports as far as port area goes.
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Old 08-18-2015, 01:38 AM
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as i mentioned in 2nd post reason im using 4 inch ports is to adjust the tune while maintaining a decent amount of port area.....all open its 40hz with a nice amount of port area mainly for SPL use....3 open its tuned to 34hz ment more for daily musical use plug 2 of them its tuned to 28hz only for lows
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Old 08-19-2015, 01:52 AM
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Theoretically it doesn't matter if you have ports on any and all sides of the enclosure. The wavelengths are so large at those frequencies that they are purely omnidirectional. However...once you put any kind of boundary around the ports they can start to couple differently. A port that's coupled to the environment will change it's effective tuning. I don't think it will make that much of a difference though unless you had one port pushed up against a wall and the rest firing into the open or something. As long as there's a decent amount of space around all of the ports you'll be fine. I also think you'll be fine with the subs firing "into" the ports with only a few inches of room if you decide to put them all on one face. Around tuning there's such a high acoustic impedance rise anyway that the tiny decrease in compliance due to the ports being "in the way" will be utterly negligible. Above tuning it doesn't matter what's going on in the box as it's purely a spring-driven environment.
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Old 08-19-2015, 02:39 AM
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i mean if you guys think all ports on 1 side firing to the side and subs forward inverted basiclly the subs will be facing the sides of the ports....within 4 maybe 5 inches
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