View Full Version : what design would be more efficient?
04-18-2007, 03:49 PM
3" port across the whole bottom (37")
or a 5" port thats 19" in the middle of the box.
sorry for the really bad pics.
04-18-2007, 05:20 PM
04-18-2007, 06:09 PM
He's asking if there is any different between a port that is incredibly wide, but not very tall, versus a port that is much more squared
04-19-2007, 01:56 AM
with out knowing any more information other then the one you have provided. the most efficient port is the more squarish port. the best port is a port that stays with in a 1 to 1 ratio of width to height or round. since it provides the lest amount of surface resistance area within the port.
04-19-2007, 10:10 AM
1:1 is best, 8:1 is acceptable. Any farther than that and the wall resistance messes up the tuning.
What are you tuning to and do you have any idea how long that port will be?
04-19-2007, 01:15 PM
thanks guys, i just didnt know if the 5" port in the middle would cause air flow issues.