I need Help On Building a Box

[flexfitted]

Now, compared to some replies i've read, im such a beginner when it coems to making box, my theory was always bigger the better in sealed boxes, and the rest were all shit. But ive come to think that ported boxs sound very sexy, and I am going to attempt to make one. Heres what ive got so Far. 3 Rockford Fosgate P1 10's ( im a poor college student :) ). Ive got a Civic 91 HBK. which gives me 39in width, 19in depth n 16in height, Ive designed a box being 36 wide 15 high and 15 deep, It pretty much Yields a 3ft box, which is what they need on the website, a 1ft ported. Now, ive read up that I need a 3inch pipe that is 13.75 inches deep, I read this crazy post
http://www.highaltitudeimports.com/showthread.php?t=24382&page=3&pp=15
soem of these guys know what there talking about and I got out of the post that the Air in this pipe will be moving with the Sub.

Now heres my question(s):

1. Can these Tubes be placed anywhere on the sub box, ( i think they can ) So i was planning on putting them on the top of the box.

2. Can these tubes be bigger? but not smaller right, cuz they will push or pull too much air and cancel out the effects of the ported box seeming like its closed. The only down side of them being bigger is its more air to push, but i was wondering if i could just go a bit bigger to make sure that the subs wont start distorting.

3. Should i individually seal each of the subs? like put a wall in my box that seals the subs and the ports to 3 compartments.

Now as for Tuning? I have no clue what that is, so if u could explain how i would tune. But remember i know nothing really.

Also Im not looking for like a super tight, super crazy system, I just want something nice and loud, that wont wreck my subs, I wont be able to tell if its distorting will i? And will the ported box sound like shit if i make it too big or too small? Ive read up on this and it seems like you need to be fairly elite to make these perfect, but i just want a nice ported box and i dont want to spend 300$ on a box, id rather make it myself too its funner :cheers:

[LeonZ]

I built a box

http://www.gardengames.co.uk/acatalog/storage%20box.jpg

[HondasTrail]

Smart ass :rofl:

[preludeshfan]

Now, compared to some replies i've read, im such a beginner when it coems to making box, my theory was always bigger the better in sealed boxes, and the rest were all shit. But ive come to think that ported boxs sound very sexy, and I am going to attempt to make one. Heres what ive got so Far. 3 Rockford Fosgate P1 10's ( im a poor college student :) ). Ive got a Civic 91 HBK. which gives me 39in width, 19in depth n 16in height, Ive designed a box being 36 wide 15 high and 15 deep, It pretty much Yields a 3ft box, which is what they need on the website, a 1ft ported. Now, ive read up that I need a 3inch pipe that is 13.75 inches deep, I read this crazy post
http://www.highaltitudeimports.com/showthread.php?t=24382&page=3&pp=15
soem of these guys know what there talking about and I got out of the post that the Air in this pipe will be moving with the Sub.

Now heres my question(s):

1. Can these Tubes be placed anywhere on the sub box, ( i think they can ) So i was planning on putting them on the top of the box.

2. Can these tubes be bigger? but not smaller right, cuz they will push or pull too much air and cancel out the effects of the ported box seeming like its closed. The only down side of them being bigger is its more air to push, but i was wondering if i could just go a bit bigger to make sure that the subs wont start distorting.

3. Should i individually seal each of the subs? like put a wall in my box that seals the subs and the ports to 3 compartments.

Now as for Tuning? I have no clue what that is, so if u could explain how i would tune. But remember i know nothing really.

Also Im not looking for like a super tight, super crazy system, I just want something nice and loud, that wont wreck my subs, I wont be able to tell if its distorting will i? And will the ported box sound like shit if i make it too big or too small? Ive read up on this and it seems like you need to be fairly elite to make these perfect, but i just want a nice ported box and i dont want to spend 300$ on a box, id rather make it myself too its funner :cheers:

first of all i wouldnt use the specs from the manufacturers website. doing that you will wind up with the box they designed which may not be what you really want.
second you cant port all 3 subs through 1 3" port doing that will cause the tuning to be way off and the port velocity will be way too high.

also in responce to your question you have to have the ports on the same surface as the subs. if not you will have a time delay that will affect the tuning frequency to the listner.
if you want my advise you should enlist the services of someone like myself with experience and a computer to help design the box around your musical preference and space requirements

[Dsmboi50]

first of all i wouldnt use the specs from the manufacturers website. doing that you will wind up with the box they designed which may not be what you really want.
second you cant port all 3 subs through 1 3" port doing that will cause the tuning to be way off and the port velocity will be way too high.

also in responce to your question you have to have the ports on the same surface as the subs. if not you will have a time delay that will affect the tuning frequency to the listner.
if you want my advise you should enlist the services of someone like myself with experience and a computer to help design the box around your musical preference and space requirements


Wow you wouldnt use the manufactures suggested box size/tuning freq? That's pretty stupid.

[preludeshfan]

Wow you wouldnt use the manufactures suggested box size/tuning freq? That's pretty stupid.

lol no actually whats stupid is not being smart enough to figure out your own box design. like so many that feel the way you do who's more stupid? someone who sand figure anything out for themselves or someone who knows better and can solve their own problem for themselves?

whats more stupid is that you dont even know who your talking to and you call them stupid for somthing you know nothing about.

you ever hear the phrase if you cant say anything nice keep your mouth shut? you should try it sometime.

[flexfitted]

ok So, how exactly would i know what specs to make, and will tuning make a big difference, i listen to like Techno, Rap and soem country :cry: (my gf) lol. So what tuning do i want?

[flexfitted]

well and i was planning on making that box, and putting 1 3' pipe in each box, and ill seal them all seperatly, so 1 box 1ft cube with a 3 inch pipe

[preludeshfan]

your still going to have too much port velocity and it will make noise.
you need to tune the box for the type of music you like and for the car your putting it into if you want to get the most for your money.

[flexfitted]

how exactly does one tune?.. can u get some prgm? or some calculation? if so, how to i do it :)

[preludeshfan]

there are some programs available for free download on the net. i dont recall their names. however none of them will plot a responce graph with an incar responce. and unless your familiar with subwoofer design they probly wouldnt help you much. it takes experience to understand what the graph is telling you. and you have to have some audio background to know what is a good tuning setup.

otherwise i suppose you could go through a very large string of calculations and get it ballpark but if you do that you might as well use the manufaturers specs. the whole point is that if you want it done right and if you dont like wasting your money for some half baked setup then you need to enlist the services of someone who knows what they are doing.
not to mention you could actually learn somthing new in the process.

oh and BTW i probly wouldnt be using a pipe i would use a slot port because that way the port area can be exactly what it needs to be rather than having to go with standard 3,4,5" diameter pipes. many times the tuning needs the area between one of these sizes to be optimal and the only way to do that is to use a slot port.

[flexfitted]

can do. so they was a 3 inch pipe that is 13.75 inch long, so i do the calculations and find the area it pushes and just make a slot with some length and use that instead of pipe right?

[preludeshfan]

can do. so they was a 3 inch pipe that is 13.75 inch long, so i do the calculations and find the area it pushes and just make a slot with some length and use that instead of pipe right?


no no no what i am saying is that using a 3 inch port is too small. if you make a slot port you can increase the port area, which lowers the port velocity but also causes the port length to be longer. and unfortunatly it takes up more space inside the box. and as a result the box will need to be larger to accomidate it. the problem is without a computer the calculations become too complex to get right.

[flexfitted]

oh ok gotcha, hmmm is there any way you can give me some specs on the port length and box? The sub is the Rockford Fosgate Punch2 10''