if possible can someone give me a square port calculator, or even tell me how to calculate from round port to square port. thanx
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xTimx
NOTES ON CALCULATING PORTS
SURFACE AREA OF PORT
To get the square inches of a ports surface area you multiply 3.14 times circumference of the port. IE (4¡±)
If you have multiple ports you then multiply the results by the number of ports that you have. So if you have (2) 4¡± ports then you calculate as follows
3.14 X 4 = 12.56 12.56 X 2 = 25.133 25.133 Is the surface area of the two ports now combined
four is the size of port 12.56 is the surface area of one port the X 2 means that you have 2 ports and 25.133 is the total volume of both ports.
HOW TO CONVERT A CIRCULAR PORT TO A SQUARE PORT
If you want to use square ports, use a port whose height multiplied by its width equals the 'port area the port length will be the same as the round port.
Let¡¯s say you want to convert a 4¡± port which is 14.5 in long to a square port. Multiply 3.14 X 4 = 12.56 now calculate what times what would = 12.56 or 12.5 2 X 6.25 =12.56 so you have a port that is 2 X 6 ¨ù X 14.5 long
Or if you have 25 sq/in of surface area and a length of 14.5 you calculate: 25 % by 2 =12.5 so you have 2 X 12.5 X 14.5 long.
A good site with a port calculator is https://www.eatel.net/~amptech/syndicate/spboxnew2syndicate.htm
Which is Basic Car Audio Electronics
If you give me your email I will send you a copy with the correct characters
if you try out a program like WinISD it will cal. for you it is freeware and can be easily be found on the net
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
actually i found another good site for square port calc. here it is......https://www.loudspeakers101.com/VentCal1.htm