How to calculate this box
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=70528
Printed Date: April 29, 2024 at 2:20 AM
Topic: How to calculate this box
Posted By: dabper
Subject: How to calculate this box
Date Posted: January 11, 2006 at 3:26 AM
 ------------- hello evey body
Replies:
Posted By: memphis11223344
Date Posted: January 11, 2006 at 9:45 AM
that box is shhh, its the same box as the dual set up. i wouldnt even bother putting that in. ------------- 6 memphis PR 15's sealed enclosure. indash mobile video system. alphasonik HC800PMA 3000 rms
MECP first class installer
Posted By: kirktcashalini
Date Posted: January 11, 2006 at 2:51 PM
a big 10-4. and what do you need to calculate about a pre-fab anyway? if it plays it plays, not much you can do to edit the sound.
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99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)
Posted By: youngone
Date Posted: January 11, 2006 at 2:55 PM
make your own with slot ports. will sound a lot better. + you gain knowledge in the process.
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Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend
On the12volt you give some info and you get in
Posted By: dabper
Date Posted: January 12, 2006 at 2:12 PM
 ------------- hello evey body
Posted By: DYohn
Date Posted: January 12, 2006 at 2:20 PM
And your question is...? Both enclosures above are 4th order bandpass systems. They would perform differently due to driver displacement issues unless the chamber volumes were adjusted accordingly. ------------- Support the12volt.com
Posted By: dabper
Date Posted: January 12, 2006 at 2:28 PM
what is program for calculate it?
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hello evey body
Posted By: DYohn
Date Posted: January 12, 2006 at 3:18 PM
Posted By: dabper
Date Posted: January 21, 2006 at 8:37 AM
 (Top/Left in picture) ------------- hello evey body
Posted By: bellsracer
Date Posted: January 22, 2006 at 2:13 AM
considering the space taken up, the size of the woofers, and the setup they have going, I'm betting that it is one of two types: 1) (the most likely one) It is a basic type two (or second order) sealed box with the woofer facing out to shrink the box down some more. -or- 2) It is a type four (forth order - another sealed box) Passive Radiator setup with the cone underneath it acting as a tone diaphragm to give it a smoother bass tone and to shrink the box a lot. This setup allows a really small box to be used for this kind of design as well. That is... unless those darker blue circles are ports... In which case it is a basic Bass Reflex ported box with a clever design for finding enough space for it. They don't look like ports to me though... they sit on the surface of the box(s) and look pretty solid. ------------- Never send your ducks to eagle school.
The difference between ordinary and extraordinary is that little extra.
The 3Ls of life: Learn from the Past, Live for the Present, Look to the Future.
Posted By: oscarurban
Date Posted: January 22, 2006 at 10:54 AM
those blue point it's only to see where the mdf goes. to be a port for a ten inches in most cases is 2-3 in, and higer for 12 or 15inches
Posted By: stevdart
Date Posted: January 22, 2006 at 11:30 AM
Stacks of prefab, preloaded boxes with fake port holes. And you have to mount the thing to seal the bottom, because it looks like there ain't no bottom. The top box in question has an inverted driver. The box material appears to be flimsy because it looks pretty thin. Stay away from these and save your money for something better.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: dabper
Date Posted: March 27, 2006 at 1:30 PM
 What is program use for calculate it? ------------- hello evey body
Posted By: Aruman
Date Posted: March 27, 2006 at 1:39 PM
it's a 4th order bandpass https://www.diysubwoofers.org/caraudiosub.htm
Posted By: coppellstereo
Date Posted: March 27, 2006 at 6:17 PM
Now would be a good time to explain what 4th order means. I dont have a good definition.
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