Hey Guys-
For those of you who have purchased and are using Kicker KMT6 tower speakers, we have built a small batch recently that are actually TOO air-tight. They are so air-tight that when you get them out in the sun and the heat, the air inside them expands and pushes the midrange cones forward.
We have experience with and design for such a thing, particularly when we are dealing with synthetic injection-molded products. However in this instance, there are a few speakers that are out in the field being used that will still show symptoms of being totally sealed, and the midrange cones will push way forward, resulting in little or no sound from the midrange drivers.
The fix is extremely easy.
I have attached a picture showing where you can drill a VERY TINY hole on the side of one of the screw bossses that hold the front half and the back half of the enclosure together. We recommend a 0.7 mm hole. That size of a hole is extremely small, and is accomplished with a very tiny jeweler's or model maker's drill. The size is not super-critical, but you want to drill the smallest hole possible, and drill it at an angle to minimize or prevent water intrusion, as shown in the drawing. The hole location shown in the drawing is low enough to prevent any water issues in a typical installation, but if you have yours mounted differently, you may find that a different location is better for your needs. Another great option is for you to drill a tiny vent drilled right at the mating seam between the front half and the back half of the enclosure. The key is to have the hole somewhere on the bottom half of the enclosure as mounted.
If you have any questions at all, feel free to PM me, or post here.
Thanks guys!
Have a great safe summer
Phil
Kicker
(Message edited by philwsailz on June 22, 2009)
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