I need to make 1 slot port for my 3 alpine type r 12s. the usable height of the box is 17.5 inches. how long and how wide to the port sides gotta be? i want sql. i listen to everything. i was thinking of tuning it to 36 hertz.

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Check the 12volt.com they have a lot of information about speaker enclosures and even mathematical computations to allow you to optimize the enclosure design for your preferences hope this helps

ryan

Posted on Feb 18, 2009

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Hi,

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Goodluck!

Posted on Jan 02, 2017

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Calculating the cubic feet of a space requires multiplying the area of the bottom times the average height. You get the bottom area by multiplying the length times the width. Remember, to get cubic feet, you need all your measurements in feet to start with.

Here is your formula:

VOLUME (in cubic feet) = Length (in feet) X Width (in feet) X Height (in feet)

If it's a rectangular room you're working with, it is all straightforward. If there are irregular walls, it may be necessary to divide up the room into rectangular sections and then add together their individual volumes. If the ceiling is sloped, you need to use the height that has the same ceiling area above it as below it. Good luck! Truly.

Here is your formula:

VOLUME (in cubic feet) = Length (in feet) X Width (in feet) X Height (in feet)

If it's a rectangular room you're working with, it is all straightforward. If there are irregular walls, it may be necessary to divide up the room into rectangular sections and then add together their individual volumes. If the ceiling is sloped, you need to use the height that has the same ceiling area above it as below it. Good luck! Truly.

Jul 25, 2014 | Building Materials

To make it easier for you below are the figures for the

Radius= 11.5 inches

Height = 17 inches.

Now use the formula above to calculate it.

For the

Radius = 0.25 inches

Height = 0.5

Use the same formula above for jelly bean as well.

Once you have both figures,

AND VOILA, you have the amount of jelly beans in a jar (Round the figure out)

Cheers!

Apr 28, 2014 | Texas Instruments TI-84 Plus Calculator

depends what kind of car they are going in and what kind of sound you are going for.

generally speaking ported boxes are louder, if you choose this i would recommend filling box with poly-fill.

non-ported boxes get deeper bass and hit much harder. no matter what set up you choose a good quality box that does not flex is EXTREMLY IMPORTANT. you will want the wood to be at least 3/4" thick and the correct cubic feet.

generally speaking ported boxes are louder, if you choose this i would recommend filling box with poly-fill.

non-ported boxes get deeper bass and hit much harder. no matter what set up you choose a good quality box that does not flex is EXTREMLY IMPORTANT. you will want the wood to be at least 3/4" thick and the correct cubic feet.

Mar 31, 2011 | Alpine Type-R SWR-1242D Car Subwoofer

http://www.sonicelectronix.com/item_13203_Kole+Audio+KMX-15.html
look at the specs, you should use 3/4 plywood or particle board, roughly 19' tall 19'' wide and 10'' deep

Jun 04, 2010 | Kole audio KMX-15 Car Subwoofer

2000 Pontiac Grand AM 3.4 liter V-6 VIN "E"

Hope helps (remember rated this).

Hope helps (remember rated this).

May 17, 2010 | 2000 Pontiac Grand Am GT

Measure Exterior Height & Width and Depth for Dimension.

Interior Space = Then, Measure all open accessible area inside the fridge and add the two together, following the formula of H+W+L Freezer and H+W+L Refrigerator,add together and BAM ya got cubic inches.= Square inches, then divide by 1,728 (the number of cubic inches in a foot (3) Cubed.

Example 1: 60 inches tall, 42 inches wide, 30 inches deep = 75600/1728 = 43.75 Cubic Foot AREA

Example 2: fREEZER dIMS = 24 DEEP x 18 HIGH x 36 WIDE =15552/1728 is 9 CuFt. Refridgerator 36 wide, 36 high 28 deep = 36,288/1728 = 21 CuFt. + 9 CuFt. = 30 Cubic Foot Capacity.

By the Math Wiz RUDY :)

Interior Space = Then, Measure all open accessible area inside the fridge and add the two together, following the formula of H+W+L Freezer and H+W+L Refrigerator,add together and BAM ya got cubic inches.= Square inches, then divide by 1,728 (the number of cubic inches in a foot (3) Cubed.

Example 1: 60 inches tall, 42 inches wide, 30 inches deep = 75600/1728 = 43.75 Cubic Foot AREA

Example 2: fREEZER dIMS = 24 DEEP x 18 HIGH x 36 WIDE =15552/1728 is 9 CuFt. Refridgerator 36 wide, 36 high 28 deep = 36,288/1728 = 21 CuFt. + 9 CuFt. = 30 Cubic Foot Capacity.

By the Math Wiz RUDY :)

Apr 18, 2010 | Kenmore 20.6 cu. ft. Top Freezer...

The Optiplex GX260 is limited in it's graphics card upgrading, due to,

1) The limited size inside the computer case, if the Optiplex GX260 is a Small Form Factor, (SFF), or Small Desktop computer.

The Small Mini-Tower may also be fairly limited because of size constraints.

SFF is,

3.57 inches Tall (9.0cm)

12.54 inches Wide (31.9cm)

13.93 inches Long (35.4cm)

Small Desktop,

4.2 inches Tall (10.6cm)

15.3 inches Wide (38.9cm)

17 inches Long (43.2cm)

Small Mini-Tower,

16.7 inches Tall (42.5 cm)

7.1 inches Wide (18.1cm)

17.6 inches Long (44.7cm)

2) Uses AGP graphics cards.

However will use either 4X or 8X AGP graphics cards.

(AGP 8X being the better technology)

3) Power Supply

It's a 200 Watt supply, probably with a 10 Amp, 12 Volt power rail.

With one of the more powerful AGP 8X graphics cards out there, you probably will be alright, but the age of the power supply is what concerns me.

With the added load of an AGP 8X graphics card, it could cause the power supply to fail. Perhaps not right away, but probably right in the middle of a killer game.

The motherboard chipset is an Intel 845G.

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4_Chipsets

The motherboard chipset is the Northbridge, and Southbridge chipset.

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

(CPU stands for Central Processing Unit, or Microprocessor, or Processor)

When dealing with Integrated Graphics such as is on your motherboard now, the Southbridge chip handles it.

(Chip, and Chipset are slang terms for I.C., or Integrated Circuit)

The Northbridge chip on the Optiplex GX260 is an Intel 845G. The Southbridge chip is an Intel ICH4.

Just about any AGP 8X graphics card, will S-M-O-K-E the integrated graphics you have now.

Also Integrated Graphics has to use some of the System Resources.

Some of the Processor, and Ram Memory resources.

With a dedicated graphics card, it has it's own Processor, and Ram Memory.

(GPU - Graphics Processing Unit, and graphics ram memory)

This frees up the System Resources for the computer, and allows better graphics.

The SFF, and Small Desktop GX260 will require using a half-height graphics card. Not as tall as a normal graphics card.

The Small Mini-Tower may also. The computer case size is measured at the Outside edges. This doesn't give you an accurate measurement, of Inside the computer case.

For this type of GX260, you will have to physically measure from the AGP graphics expansion slot, (The small black slot above the white PCI slots, and below the Processor socket), to the inside edge of the computer case.

Determine whether the graphics card has to be half-height, or full height.

In an added comment I will list three AGP 8X graphics cards examples.

One in a half-height configuration, two in a full height configuration.

1) The limited size inside the computer case, if the Optiplex GX260 is a Small Form Factor, (SFF), or Small Desktop computer.

The Small Mini-Tower may also be fairly limited because of size constraints.

SFF is,

3.57 inches Tall (9.0cm)

12.54 inches Wide (31.9cm)

13.93 inches Long (35.4cm)

Small Desktop,

4.2 inches Tall (10.6cm)

15.3 inches Wide (38.9cm)

17 inches Long (43.2cm)

Small Mini-Tower,

16.7 inches Tall (42.5 cm)

7.1 inches Wide (18.1cm)

17.6 inches Long (44.7cm)

2) Uses AGP graphics cards.

However will use either 4X or 8X AGP graphics cards.

(AGP 8X being the better technology)

3) Power Supply

It's a 200 Watt supply, probably with a 10 Amp, 12 Volt power rail.

With one of the more powerful AGP 8X graphics cards out there, you probably will be alright, but the age of the power supply is what concerns me.

With the added load of an AGP 8X graphics card, it could cause the power supply to fail. Perhaps not right away, but probably right in the middle of a killer game.

The motherboard chipset is an Intel 845G.

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4_Chipsets

The motherboard chipset is the Northbridge, and Southbridge chipset.

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

(CPU stands for Central Processing Unit, or Microprocessor, or Processor)

When dealing with Integrated Graphics such as is on your motherboard now, the Southbridge chip handles it.

(Chip, and Chipset are slang terms for I.C., or Integrated Circuit)

The Northbridge chip on the Optiplex GX260 is an Intel 845G. The Southbridge chip is an Intel ICH4.

Just about any AGP 8X graphics card, will S-M-O-K-E the integrated graphics you have now.

Also Integrated Graphics has to use some of the System Resources.

Some of the Processor, and Ram Memory resources.

With a dedicated graphics card, it has it's own Processor, and Ram Memory.

(GPU - Graphics Processing Unit, and graphics ram memory)

This frees up the System Resources for the computer, and allows better graphics.

The SFF, and Small Desktop GX260 will require using a half-height graphics card. Not as tall as a normal graphics card.

The Small Mini-Tower may also. The computer case size is measured at the Outside edges. This doesn't give you an accurate measurement, of Inside the computer case.

For this type of GX260, you will have to physically measure from the AGP graphics expansion slot, (The small black slot above the white PCI slots, and below the Processor socket), to the inside edge of the computer case.

Determine whether the graphics card has to be half-height, or full height.

In an added comment I will list three AGP 8X graphics cards examples.

One in a half-height configuration, two in a full height configuration.

Apr 13, 2010 | Dell OptiPlex GX260 PC Desktop

It’s overall length is 1070mm, overall width is 670mm and its wheels base is 1290mm. Since sporty YZF R15 is shorter too and its height is just 1070mm. YZF R15 150cc features F 80/90 -17 inches tyres in the front and 100/80-17 inches tyres in the rear

Nov 10, 2008 | 2008 Yamaha YZF-R15

I've Got The Same Subs, I Got A Formula On The Net, Its Dimension Is Aprox 9 D X 24 H x15 W.

Although I Have Them In A Home Made Ported Box I've Made, Its Dimensions Are 8 D X 23 H X 17 W And Its Sound Pretty Damn Good. I Have A 2 Inch Round Port X 6 Inch Long. The Formula Says I Should Have A 3 Inch Long Tube.

Although I Have Them In A Home Made Ported Box I've Made, Its Dimensions Are 8 D X 23 H X 17 W And Its Sound Pretty Damn Good. I Have A 2 Inch Round Port X 6 Inch Long. The Formula Says I Should Have A 3 Inch Long Tube.

Feb 23, 2008 | Volfenhag ZX-4712 Car Subwoofer

Sealed box and somewhat large if they are 12's I usually try to get 3 cubic feet overall internal dimensions and generally the inside dimensions will be 13" tall 32" wide and 13"-14" inches deep. with no divider and make sure the box is sealed. Personally I like to phase the speakers backwards. Gives the bass a little more rumble.

Jan 05, 2007 | Sony XS-L1200B Car Subwoofer

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