The last part here is a general purpose fudge factor. It should be pretty close for most circumstances though. Do the modeling, and see what difference a 1/2" difference in port length makes. My experience is that there are usually unaccounted for losses between the model and the actual article, and that a little longer port helps to make up for those anyway.4. The Precision Port should be 1" longer than Lv when assembled.
But, a 2" port would have to be 1 1/2 inches long to equal the tuning of a 3" port 4 1/2 inches... that's called a holeAnother option would be to use 2 inch flared ports as long as the air speed stays acceptable for your design.
You're right, I had it backwards.But, a 2" port would have to be 1 1/2 inches long to equal the tuning of a 3" port 4 1/2 inches... that's called a hole
Yeah, I was being a little too much of a ninny.. plugging the values into WinISD ended up with two curves that were pretty close to identical. I think there might have been a 1hz difference in where it started to roll off and where it ended..The last part here is a general purpose fudge factor. It should be pretty close for most circumstances though. Do the modeling, and see what difference a 1/2" difference in port length makes. My experience is that there are usually unaccounted for losses between the model and the actual article, and that a little longer port helps to make up for those anyway.
As zero said, I doubt there will be any significant difference between the two.
