Question about ports
I have a question about ports, it there any differences between a round port and a slot port? Also I have been looking around online at box design and notice people using square ports in the middle of the box, is the any reason for square ports?
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Functionally there is no difference between a round port and a rectangular vent of the same area. It is often easier to find more area for a rectangular vent and to make them longer than a round port.
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as long as you dont make them too thin... like an inch or two minimum
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^ For sure. The more square the better.
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ok thanks guys the reason I'm asking is I have to build a new box and wanted to go with a rectangular vent rather then round this time around. Any help would be great in designing a new box/amp rack.
We just had a baby boy and now I need the back of my van for the stroller so I need to build a new box that is smaller but still can use my two 10" subs. Right now my box is 48" wide X 14" high X 12" deep, I would like to make a smaller one but not sure on how to design the box, amps rack and still have room for the stroller also. I have 40" high X 15" deep to play with, the stroller is 21" wide. Would like to box to be 23" wide and no wider, so I still have room for the stroller and baby bag. Should I face the subs on the side of the box and the vent to the back? OR Subs and vent facing the rear? I was also thinking of trying the sell the 2 10" and box and just getting a single 12" 0r 15" sub. I'm runing 2 X Earthquake dbx10 and a Alpine MRD-M1000 @ 2 ohms so around 1000 watts rms @ 14.4 volts, and a Earthquake PH120.2 for the fronts stage. Any help would be great. Thanks Here my set up now. |
I would think you'd generally get much better results having the port and subs facing the same way, and towards the rear. i had a large side firing port on two kickers for a short time and absolutely hated the sound.
Edit: Just saw the picture- You might actually be better off facing forward since they're up against the back of a pretty spacious vehicle, definitely experiment. |
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Originally Posted by Colton
(Post 663115)
I would think you'd generally get much better results having the port and subs facing the same way, and towards the rear. i had a large side firing port on two kickers for a short time and absolutely hated the sound.
Edit: Just saw the picture- You might actually be better off facing forward since they're up against the back of a pretty spacious vehicle, definitely experiment. Here what it sounds like now. my voltage dropped around 13.3 volt but I was just idling to make the video when driving I see in the low around 14+. Will make a video of me driving around with the voltage drop. https://www.caraudioforumz.com/attac...ine=1324438389 |
Stack the woofers with a slot vent on the bottom, all facing back. Should leave you lots of width.
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ok here what I came up with for the box, what do you guys think? Its 3.4 cu.ft before port, sub disp. I would like to keep it close to 3 cu. ft.
18" wide X 30" high X 14" deep = 3.40169 cu.ft t port 3" high X 16.5" wide X 32.49" long tuned @ 32 hertz Never did a slot port before so the port will need a bend in it, so do I cut 16.5" X 11"" and 16.5" X 20.75" for the back wall to make the 32.5" long? I need to keep the port 3" wide on the back wall also right? Would this be any good? |
^ Yes. The only thing that's maybe questionable is the tuning. It's pretty low - is it still above the Fs of the woofer?
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