Question about Alpine Type-R SWR-1242D Car Subwoofer

# Need dimensions of port

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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Posted on Jan 02, 2017

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Here is your formula:

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### I have 8 alpine dvc type r 12s, should i port them or go with a sealed box.

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.
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Measure Exterior Height & Width and Depth for Dimension.
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The Optiplex GX260 is limited in it's graphics card upgrading, due to,

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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)

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

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