port displacement

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mrbubbles00482

Member - Posts: 31

Joined: September 18, 2007

Location: Arkansas, United States

Posted: September 22, 2007 at 9:52 AM / IP Logged

Im going to be building a box for 4 Kicker CVX 12's. Ive built boxes before and Ive decided to make my own for 4 12's, and not have someone build it for because of the cost. I was wondering about the port displacement, and if it would be best to split the box into 2 chambers, and have one port per chamber, or leav the box one hole box with one port. Ive calculated the box volume with the12volt's box calculater, but they dont have a square port calculator

The box will be of two peices, a front wedge, and a back rectangle.

Wedge

Height 1-15 inches, Height 2-13 inches, Depth 21 inches, width 60 inches. Volume in cubic feet 8.4

Square back.

width 44, depth 10, hight 11. Volume in cubic feet 1.9

Together the overall volume of the box is 10.3. The program I used to calculate the port said at 36 hertz the port would be inside width 6 by inside length 8, with a port length of 4.12 inches. All that is calculated for one big chamber, and if it is right then I need help figureing the port displacement. If making the box into two chambers would be better, let me know.

mrbubbles00482

Member - Posts: 31

Joined: September 18, 2007

Location: Arkansas, United States

Posted: September 22, 2007 at 10:13 PM / IP Logged

anyone? help on port displacement?

andrewbutler

Member - Posts: 5

Joined: November 08, 2007

Location: Oklahoma, United States

Posted: November 08, 2007 at 10:32 PM / IP Logged

Try http://www.linearteam.dk/ and download their free software...if you build boxes on a regular basis or even just everynow and then its well worth it to download it...download the "WinISD Pro" and it will give you port calculations and other measurements you need for your box...helped that helps bro

andrewbutler

mrbubbles00482

Member - Posts: 31

Joined: September 18, 2007

Location: Arkansas, United States

Posted: November 08, 2007 at 10:37 PM / IP Logged

Yes it helps. I have a program called Probox but, im not 100% confident in it so ill try it out.

andrewbutler

Member - Posts: 5

Joined: November 08, 2007

Location: Oklahoma, United States

Posted: November 08, 2007 at 10:42 PM / IP Logged

good luck

andrewbutler

mrbubbles00482

Member - Posts: 31

Joined: September 18, 2007

Location: Arkansas, United States

Posted: November 08, 2007 at 10:53 PM / IP Logged

Just installed the program and I got the same as my other program. Either way they both work so. Came out with the same results. Now I got to save the money to buy the stuff and build everything =]

andrewbutler

Member - Posts: 5

Joined: November 08, 2007

Location: Oklahoma, United States

Posted: November 08, 2007 at 10:56 PM / IP Logged

lol that is going to be a pretty freakin rediculous set up...is this just for the hell of it or some advertising for you or somethin??

andrewbutler

i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: November 09, 2007 at 5:12 AM / IP Logged

Mr bubbles you can use the box volume calculator to figure the port displacement. Outside dimensions of the port. Length X Width X Height in inches = Cubic inches. Divide that number by 1728 that will give you port displacement in Cubic Feet

mrbubbles00482

Member - Posts: 31

Joined: September 18, 2007

Location: Arkansas, United States

Posted: November 09, 2007 at 7:53 AM / IP Logged

andrewbutler wrote:

lol that is going to be a pretty freakin rediculous set up...is this just for the hell of it or some advertising for you or somethin??

Its for competition. Ive changed what im going to do. My current set up it two kicker CVX's. Which are up for sell on ebay right now due to my transmission going out.

The new set up will be 4 L7 12's, 2 ZX 1500.1's, and a zx 350.4, 250 amp alternator and 2 extra batteries.

andrewbutler

Member - Posts: 5

Joined: November 08, 2007

Location: Oklahoma, United States

Posted: November 09, 2007 at 10:42 PM / IP Logged

lol thats rediculous man haha good luck

andrewbutler

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