• Com Port Status
• Com Port Splitter Software
• Com Port Software

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Com Port Status

SLOT Systems Limited is the leading retail company for affordable and durable mobile phones, computers, accessories, and various types of Electronics. We consider it necessary to fill up this need in the global information technology sector with emphasis on Africa market.

Com Port Splitter Software

• When talking about no deposit bonuses you need to know that there are a few types of bonuses. First of all you have the free money bonuses which means that you get an amount in cash to play Slot Port for. There is then also the free spins which often is limited to a specific type of game.
• Serial port redirection software creates extra virtual serial ports in an operating system without additional hardware installation (such as expansion cards, etc.) in order to split or redirect the data to and from a serial port for a variety of applications.
• With a slot port, you can use as much port area as needed for your application, which is especially helpful in SPL applications. A slot port requires more port area than a flared port to minimize port noise. We generally use a rule of 12 square inches of port area per cubic foot of internal volume of the custom sub box.
• Slot port is easier to build. Slot port adds strength. Slot port has a higher tendancy for turbulence since it uses 90degree corners. Slot port is cheaper. Round port if flared are more efficient. Round port costs more to make. Round ports are a bitch sometimes to mount, as they need support internally so they dont move. Round ports are not the.

Com Port Software

• edited February 2019

  I always use winISD to convert. Adjust the tuning to match your 3' X 3.65' then select square port and enter your target height and width to get the length. Online calculator can do the same thing. http://www.mobileinformationlabs.com/HowTo-1Woofer-Box-CAL%20Port%20lenth%201.htm
• How about a spreadsheet from our friend Paul Carmody?
  

  HTH

  Jim
  
• As Wolf posted: Pi x r^2 = L x W so:
  3.1415 × (1.5')^2 = 7.068 in^2 (~ 7 sq in)
  If your slot port width is 7', then the slot port height would be
  7 sq in / 7' = 1' (7' wide x 1' high)
  Or
  7 sq in / 3.5' = 2' (3.5' wide x 2' high)
  Etc
• the area of the slot port should be the same as the area of the round port. Keep the length same.
  If you want to really optimize, usual the round ports are in the center away from the walls, whereas slot ports use the walls as one of the side - this does affect the lenght of the port for a particular tuning - Jeff B has a formula for calculating how much of the lenght should be altered if you are near a wall rather than away from a wall (at least twice the diameter of the port... Or just skip it, you will be in the ball park

• The other rule of thumb was to keep the height to width ratio no more than 1 to 7, (1 to 9?)

  I can't remember the exact end correction/ boundary factor for the slot port, but I've used port length -1 port height multiple times and been very close to the box model.

  John H, thanks to JP I did get that email
• Thanks for the answers, all. They've helped clear up the concept.
  
• Pretty sure that is 1 to 8 ratio. Rory relayed that info.
• Here's a picture that shows how the K value changes with slot port location. It was taken from this PETT thread: http://techtalk.parts-express.com/forum/tech-talk-forum/66368-q-slot-port-length.
  
• How are these calculations or examples affected when a speaker has those old fashioned slot vents sometimes found on early speakers? I'm referencing my old EV speakers that have roughly (4) 1/4' wide by 10' vents, 3/4' deep on the back of the cabinet. Was there a specific purpose for those vents, as opposed to a single vent of round or rectangular shape? Can the above vents shown by Ed Perkins be used if you desired to seal up the back of such a speaker?