now I see why dual ports though?? why not one big one?? never ported a box so I am asking just for interest sake
what 8's are you going to use??
nice design by the way I like how you tapered the edges,
so what is that about 1.6 or so cu ft??
Sometimes you have to use multiple ports to get correct tuning. If done correctly you have to use the correct size and LENGTH for the tuning frequency you are trying to achieve. It may have been the case of 1 single port needed x length that could not be achievable with a single port. If for instance a 4" port needed a 24" length to tune at 30Hz, he would have to put an elbow onto the tubing inside the box which may not be practical. However if he used 2 - 3" ports they may only need to be 10" long to achieve the same tuning and would not require the more complex elbow inside the box. It all just depends on what works best for the speakers, the box design, and the frequency you are tuning to.
The only negative with using 3" ports is that beer cans don't fit quite as well into them when you get pulled over
now I see why dual ports though?? why not one big one?? never ported a box so I am asking just for interest sake
what 8's are you going to use??
nice design by the way I like how you tapered the edges,
so what is that about 1.6 or so cu ft??
Thanks. Volume is 2.1 cu ft..You can use one or 2 ports or as many as you like. I used 3" ports which is the minimum for this setup. Otherwise you'll get port noise. I didn't want to go bigger because it will eat up volume and I needed every bit. Also, you need to make sure the port is atleast 3" from the wall.
I also rounded over the top edges so when I cover it in vinyl it will look more finished.
Sometimes you have to use multiple ports to get correct tuning. If done correctly you have to use the correct size and LENGTH for the tuning frequency you are trying to achieve. It may have been the case of 1 single port needed x length that could not be achievable with a single port. If for instance a 4" port needed a 24" length to tune at 30Hz, he would have to put an elbow onto the tubing inside the box which may not be practical. However if he used 2 - 3" ports they may only need to be 10" long to achieve the same tuning and would not require the more complex elbow inside the box. It all just depends on what works best for the speakers, the box design, and the frequency you are tuning to.
The only negative with using 3" ports is that beer cans don't fit quite as well into them when you get pulled over
I have to look for my drawing, but at the top of my head; total width:57", height/front:9", height/back:7", depth:13 1/2", bottom/width:21", space over the hump:15" and raised up 3"
Last edited by m95roadster : 03-14-2005 at 12:45 PM.
Pyramid blue!! JK. I have some XLC woofers that I never used. I'll make use of them temporarily until I find a suitable replacement. If I don't like them I might put my Audiomobile/TC sounds 10's in instead. BTW, what happened to Audiomobile...again?
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
Got a visual modification that makes your truck look just perfect? Let us know about it.
03-13-2005, 11:56 PM
why dual ports though?? why not one big one?? never ported a box so I am asking just for interest sake
Linear Mode
