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Eminence Kilomax Pro-18A 18" Cast Frame Driver
Looking to go with a 4.5-5. Cuft looking for port size and depth to be toned at 38-40hz or will this box be to small. Thank you Jerry
Unfortunately that box is far too small for this woofer. If you need a volume around 5 cubic feet, I would recommend our Dayton PA465S-8 instead. In 5 cubic feet total with a slot port that is 20.5"H x 1.5"W x 15"D you will have a tuning frequency of 32 Hz.
Date published: 2014-07-24
Rectangular port depth in a 5.5 cubic foot box
What would the port depth be for a 2" tall by 20" wide port be for this driver in a 5.5 cubic foot box for 45Hz? My box is going to have an internal dimension of 26" tall by 20" wide by 18" deep. I plan to line the inside with the 3/4" dampening foam sold by PE as well, and there will be another small loss of volume from the handles, and pole mount. I plan to place the port at the bottom front of the cabinet. Power will be provided by a Crown XLS2000.
A 2" H x 20" W slot port in a 5.5 cu ft box tuned to 45Hz comes to ~5" long.Be warned though in that size box tuned to 45hz you will have a 4db peak at 75Hz, F3 will be 55Hz, and F10 is 40Hz.
Date published: 2014-07-23