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mapolley07
12-25-2007, 11:51 PM
Okay I just finished designing my first ever ported enclosure. The box is 2.4 cubic feet tuned to 32 hz. I will scan my drawing and post it on here tomorrow morning but for now here are the specs:

External Dimensions: 35w, 17.75d, 14h using 3/4" MDF
Net Internal Volume after ALL displacements: 2.403 ft^3
Port Area: 46.875 in^2
Port Length (measured along port centerline): 43.5 in.

The tuning I know is not exactly 32 hertz, but it should be pretty darn close. Like I said, I will scan my drawing in and then post it on here tomorrow so you all can make sure I figured everything correctly, but do the figures I posted above sound about right?

PV Audio
12-25-2007, 11:53 PM
Just by glancing, that sounds about right. :)

BuckyBoy
12-25-2007, 11:54 PM
Just by glancing, that sounds about right. :)
I agree :)

mapolley07
12-25-2007, 11:56 PM
thanks. I think the actual port length that WinISD Pro gave me was something like 43.48 and the port area was like 46.9 but I rounded them to numbers that were easier to work with. We will be building the box friday so it will be ready to go once the sub and wiring comes in.

PV Audio
12-26-2007, 12:00 AM
Pfft, I make 10.68" panels all day long baby!

mapolley07
12-26-2007, 12:12 AM
This is my first ever box build, and i don't have tons of woodshop experience, so sticking to measurements that are to the 1/8" are easier for me until I gain more experience.

Now designing and drafting the plans I can do, especially if I have access to CAD software, I have done tons of that. Building is where my experience is lacking, so keeping dimensions simple makes construction easier.

BuckyBoy
12-26-2007, 12:16 AM
This is my first ever box build, and i don't have tons of woodshop experience, so sticking to measurements that are to the 1/8" are easier for me until I gain more experience.

Now designing and drafting the plans I can do, especially if I have access to CAD software, I have done tons of that. Building is where my experience is lacking, so keeping dimensions simple makes construction easier.
It shouldn't be too bad. Just take your time with the build to be sure everything is right. "Measure twice, cut once" Good luck

PV Audio
12-26-2007, 12:23 AM
This is my first ever box build, and i don't have tons of woodshop experience, so sticking to measurements that are to the 1/8" are easier for me until I gain more experience.

Now designing and drafting the plans I can do, especially if I have access to CAD software, I have done tons of that. Building is where my experience is lacking, so keeping dimensions simple makes construction easier.I was completely kidding :D

mapolley07
12-26-2007, 12:28 AM
lol okay.....I am pretty excited about this build....should get loud and sound good. I just wish it was all going in my car lol. I am helping a friend with his Grand Cherokee

mapolley07
12-26-2007, 11:37 AM
okay, I scanned in my drawing and here it is. The main portion of the drawing is a cross-section from the top showing the port.

http://i70.photobucket.com/albums/i84/mapolley07/bradsbox.jpg

in case it isn't clear, the overall height of the box is 14" so the internal height/port height is 12.5"
also the port is 3.75" all the way through

mapolley07
12-26-2007, 11:58 AM
sorry about the massive image, I resized it so hopefully this is a little better.

http://i70.photobucket.com/albums/i84/mapolley07/bradsboxresize.jpg

I would appreciate it if you all could double check my design, make sure it looks right. This is the first ported box I have ever designed and I want to make sure I did it correctly.

Thanks in advance,
Matthew

mapolley07
12-26-2007, 12:50 PM
bump.....can anyone double check my design please?

PV Audio
12-26-2007, 02:03 PM
*tear in eye* I haven't seen one of those since I was 14 :D

bigbirney420
12-26-2007, 02:17 PM
I used 4 inch Aeroport, intead of the slot. Worked well and is much easier to build. 2.0 Net tuned to 32 is what I have now and overall box in only 2.4 internally. 2.4 net will have to be 2.7 or so .16 Driver and about .1 for 15 inch slot port will tune to 32 or so

mapolley07
12-26-2007, 10:37 PM
*tear in eye* I haven't seen one of those since I was 14 :D

whats that supposed to mean? If its a bad design, can you help me make it better?

mapolley07
12-26-2007, 10:53 PM
bump...help please?

BuckyBoy
12-26-2007, 11:09 PM
whats that supposed to mean? If its a bad design, can you help me make it better?
i believe he means he hasnt seen a drawing of the box design since he was 14 because he always uses computer programs now, but i may be completely wrong
the drawing looks fine to me. looks like you put alot of thought into it and it should come out great.

mapolley07
12-26-2007, 11:21 PM
okay thanks. yeah, i don't have access to AutoCAD or Inventor right now, and i just did a quick sketch at like midnight last night so I know it wasn't the best drawing.

I would love to get back to using autocad again, but i don't want to pay for it lol

helotaxi
12-27-2007, 07:58 AM
Not to nit pick but your dimension line marked 17.75" on the right side of the drawing is not going to the right extension line. Depending on how you plan on finishing the box, I wold shorten the right end panel and make the back panel run the entire length of the enclosure. Change to the design would be make the back panel the full 35" and the right side panel 16.25". Or for the sake of making the panels a bit quicker to cut, keep the right side panel @ 17" and shorten the speaker baffle to 29.25". Making sure that the left and right panels are cut with the same fence setting on the table saw reduces the likelihood of the box ending up out of square.

mapolley07
12-27-2007, 11:29 AM
on the right side i have 2 dimensions. one is for the right side panel and the other shows the entire side length, including the 3/4" MDF for the front baffle.

the overall depth of the box is 17.75". the front baffle is attached in front of the right side panel, which shortens the side panel to 17"

mapolley07
12-27-2007, 11:30 AM
but you are right, just noticed i did dimension to the wrong extension line.....i would never do that on a better drawing, i did that sketch quickly and late at night lol

helotaxi
12-27-2007, 12:36 PM
Like I said, just nit picking.

mapolley07
01-04-2008, 12:38 PM
just an update....build day is today. we went out this morning and picked up some MDF and a couple other things we need. My buddy is at the dentist, so once he gets back we will finish picking up all the stuff we need and get to work on building. I'll post pictures as we work