Posted May 18, 201015 yr First off, can I count on port end correction to lower the tuning freq of my enclosure? For example,NET Vol. = 2.6 cuft. or 4493 cuin.Port: 12.5" wide x 3.375" high X 24" longwithout end correction, (port length = 24") tuning = 38.58Hzwith end correction, (port length = 25.6875") tuning = 37.52HzI know 1Hz difference in tuning isn't really audible (but the end correction factor will differ in different situations i.e. port height, etc), but I want to know if the end correction factor actually exists!!!!Secondly, I'm about to build a box for one DD 9512g. DD recommends 42 in^2 port area with 22 port length with 2.6 cuft NET vol. which yields 39.97 Hz tuning frequency or 38.79 Hz w/ end correction (using 12.5" wide x 3.375" high).. This tuning seems pretty high.. I listen to rap/rock so I would like the sub stage to be able to play over a fairly wide range of frequencies having okay output on the higher freq. but still get pretty loud on the lower freq.Personally.. I was thinking 36 Hz counting end correction so that would mean the physical port length should be about 26.625"So what should I tune to using 2.6 cuft NET Vol. and a 12.5" wide x 3.375" high slot port?
May 20, 201015 yr 38-40 hzWhy so high though? Many people on here tune below 35.DD recommends the high tuning, Why? I have no idea ....
May 22, 201015 yr Author 38-40 hzWhy so high though? Many people on here tune below 35.DD recommends the high tuning, Why? I have no idea .... built a box 2.52 cuft @ 36Hz and it slams!
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