Does port rario make a difference?
Im currently in the process of building a slot port box (didn't like the sound of my sealed .75 cu box, but im sellin that) and I was wondering if the ratio between height and width makes a difference? My port is going to be 1"x12". From my understanding, the air might slow down due cuz of the thinness(sp?) of the port, and actually tune the box lower. Does the 1:9 ratio make a difference in port tunings, is it that bad?
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yes; it does... for example using a square port with the same area as a 12x1 port should almost cut drag in half!
Id try to go a little wider then 1" ! |
Agreed. I try to not exceed 6:1 and never less than 1.5" in width.
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Thanks for the quick replies. I've decided to make a 3x4" port instead, so that will cut down on the drag. I have access to a router, do you think i should flare the opening of the port? will it make any noticeable difference?
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flaring may increase the output.
that's what i've seen spl guys do to their boxes, make flares. if u don't have anything better to do, sure. I wouldn't probably bother. |
If you are going to make a 3x4 vent (12 sqin) I would suggest simply using 4" diameter pipe (12.6 sqin) as it is usually easier.
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