Haunz,
You one of those anal retentive types that like to cruise around forums splitting hairs over mickey mouse bullsh!t that has been hacked, carved and chopped to death.
End Correction Factor ain't serious business, you only make want to appear that way.
If end correction factor is such wonderful thing, then explain how adding to the length of the port is a correction when in fact is does nothing more than change the whole parameter of the enclosure design????
If one variable is changed, then everything changes, the length of the port changes, thus, the volume changes, thus the port tuning changes and in the grand scheme of things for the everyday banger, end correction doesn't mean squat.
I'm with Tommy on this one " It's completely irrelevant. " It's only relevant to you because you got a wild hair up your azz about splitting that same hair and for what, to gain .000 something cubic feet that won't even be noticeable.
Granted, when I design an enclosure, I try to be as spot on as possible, but, I'll be d@mn if monkey diking factions of a 1/32" is going to make an enclosure design sound like azz.
There's no such thing a " prefection " and I suggest you get over it.