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View Full Version : JMAC!! thought of an idea for porting my box



tommyk90
10-24-2003, 06:35 PM
Hey, i don't know if you remember, but i'm the one with the truck box that wanted to port it. I just thought of an idea.

Would it be possible to make a port that goes from the top of the box, all the way to the bottom, then turn towards the driver's side, keeping the same dimensions?

EDIT: Remember, the box slopes, so the port wouldn't connect the front and back walls of the box. Kinda looks like it would in the pic.

tommyk90
10-24-2003, 06:42 PM
Here's a ****** view of the port from the driver's side

mattj
10-24-2003, 11:37 PM
doing your port like that would be perfectly fine. just sand down the corners so they are smooth. it will deter any goofy port noise if built correctly.

tommyk90
10-25-2003, 04:49 PM
doing your port like that would be perfectly fine. just sand down the corners so they are smooth. it will deter any goofy port noise if built correctly.

I'd build it, but i have to know what dimesions to make it. Plus, i'm thinking about skipping that and just getting another SE later on. I got the power for it, so i might as well use it. :thumbsup

tommyk90
10-29-2003, 01:35 PM
^^^TTT^^^

I need Jmac to see this so i can see if it'll work/get the correct measurements.

tommyk90
10-29-2003, 07:29 PM
What were the dimensions of your current enclosure ? I assume you're making this one to the same dimensions as your current one. If not, please tell me the directions :)

Well, actually i was just gonna take this one apart and put the port in this one. So you can use the other dimensions. Here's the link to it.

http://forums.caraudio.com/vb/showthread.php?p=332413#post332413

Oh, and i just remembered, since the port has to come out of the top, it can only be 1.75" wide, but as long as it needs to be.

1.75" because the top is 4" wide, minus .75" for the back wall, .75" for the front wall, and another .75" for the other side of the port(one side is the wall).

tommyk90
10-29-2003, 08:05 PM
****, ****, ****. All this time i told you the top was 4" and bottom was 6". I JUST went out and measured to make sure and realized that the top is 3.5" and the bottom is 5.5". ****!!!

tommyk90
10-30-2003, 01:53 PM
Jmac, i figured out that the ft^3 is like 1.7 now right? With that in mind i went into WinISD and it calculated for a 35 hz tuning freq, that the port would be 1.25"x6" and be 7.4" long. Does that seem right? I really want to port this box because it was much louder in my car with my friends ported box.

NEED YOUR HELP!!! Help me make my car loud!! :D

tommyk90
10-30-2003, 02:07 PM
I'll get to it as soon as possible and I am sorry that I haven't been able to do it. I've had a lot of personal problems lately and, when I have had the time, designing enclosures seemed more like a chore than the joy it usually is. I will get to it today along with Mamey's enclosure because I know you guys have been waiting patiently.

Oh, sorry bro. If you got problems it's no biggie, i'm not in a BIG rush to do this. I just want to get it all down so i know what to do when i get the time.

Thanks for all your help. Just remember that the dimensions are different now, that's why the port can only be 1.25"x??

Dimensions are
Top depth=3.5"
Bottom depth=5.5"
width=50"
height=20"

tommyk90
10-30-2003, 06:02 PM
Bah, I'm not going to get to it today, I just can't concentrate and the last thing you and I both want is for you to **** up your enclosure because I made a mistake ...

That's cool bro. I'm at school right now anyways so it would be a while before i had a chance to do the work anyways. Just don't forget about me ;)

tommyk90
11-02-2003, 11:48 PM
^^^^

Sorry, gotta get this solved

tommyk90
11-03-2003, 07:17 PM
Working on it as soon as I get through all the threads :)

Cool. Man, if we can pull this off, it would be awesome.

tommyk90
11-03-2003, 10:12 PM
Ouch. Not sure of the 43 hz tuning. This is a daily driver box and needs to sound decent. I would probably make it so the port could be sealed up, so i could probably deal with the port noise. I think any way we do it that there will be port noise because the port will be right behind your head. Any way to get around the 2 port idea and get that tuning down? The ported idea is basically just for loud to impress people.

Sorry for being such a pain in the ***. ;)

mamey69
11-03-2003, 10:14 PM
I'll get to it as soon as possible and I am sorry that I haven't been able to do it. I've had a lot of personal problems lately and, when I have had the time, designing enclosures seemed more like a chore than the joy it usually is. I will get to it today along with Mamey's enclosure because I know you guys have been waiting patiently.


I REALLY LIKE THE LAST STATEMENT :)

mamey69
11-03-2003, 10:17 PM
**** i reply in the wrong thread..... it was in the other one...

mamey69
11-03-2003, 10:20 PM
mm now I got it.. this is the page 2...

My 5 seconds of stupidity of the day.... lol

tommyk90
11-03-2003, 10:39 PM
Use a single port, extend port depth to 2" by angling the port wall to the angled part of the enclosure. Thus, you can increase width to 10" to get the same port area, but increase the size of the enclosure slightly to 1.37 ft^3 and reduce tuning to 41.2 Hz. This is just keeping it a straight port, by the way. You could choose to curve the port, but the construction will be difficult. Or you could go with a 9.5" x 2" port to reduce tuning to 40 Hz, but port noise will be more likely ...

Keep knocking that tuning frequency down ;). Do you think the increased port noise is worth the lower tuning frequency? I would really like to have this as a daily thing, so it'll play all the normal low-bass songs like late night tip and whistle while you twerk. I'm afraid that the tuning frequency isn't low enough for those songs and others. Am i mistaken?

EDIT: I really wouldn't mind having to curve the port if it reduced the frequency.

tommyk90
11-04-2003, 02:55 PM
I was thinking of doing a simple right angle port, but it's not looking feasible. Now I'm thinking of sticking with the 2" x 10" port on the driver's side at the very end and doing a "U-Turn" port to get the required length.

Well, if you can pull it off and get the tuning frequency down, i'd probably be willing to build it.

tommyk90
11-04-2003, 04:14 PM
I've gotta say, this is the first time I've ever worked on an enclosure for over 2 days without completing it ...

However, I'm just working out tuning, volume, etc. now as I'm pretty sure this will work if it can actually be done ...

For your and my sake i hope it does work out.

tommyk90
11-04-2003, 04:47 PM
I think I've got it ...

Net Volume - 1.032 ft^3
Tuning Frequency - 35.1 Hz

Due to the lack of volume, output looks to be slightly less than a pair of SE10s in a sealed enclosure, but it should yield a nice increase in output against a single sealed SE10.

Like this, only the port is 2" x 10", located against the far wall on the driver's side, and only has one single U-Turn ...

http://forums.caraudio.com/vb/attachment.php?attachmentid=1751&stc=1

Wow, that really decreased the box size. Oh well, as long as it will still be louder. Any way you could draw up a better schematic? I kinda got the idea, but a better drawing(top, front views would be good) would help me understand better.

tommyk90
11-04-2003, 04:52 PM
Wow, that really decreased the box size. Oh well, as long as it will still be louder. Any way you could draw up a better schematic? I kinda got the idea, but a better drawing(top, front views would be good) would help me understand better.

Would it be something like this?

tommyk90
11-06-2003, 02:33 PM
^^^^^ I See You!!! ;)

tommyk90
11-06-2003, 04:22 PM
Something like that, but you only need two ports walls (well, three including the actual box wall) ...

Ah, i get ya. It'd use the back and side wall, and i'd have to make the other side and top piece of the port. Now only if it'll work.


Oh, and now i'm contemplating getting 4 RE8's instead, so if it's not really possible to port this guy, i'm gonna get the RE8's sometime.