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Why is it that you seldom see anyone using a slot for a port? About the only reason I could come up with was that when using a regular tube you try to keep the openings one diameter away from any side walls which isn't as easy to do with a slot but there must be another reason I'm missing?
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A lot of folks like Onken enclosures. Don't those qualify as slots? -
Pratt, TL's use a "slot".
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David - Trigger-happy HTGuide AdminComment
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They're a pain to calculate accurately. They're a pain to build in comparison to using a piece of PVC pipe. And it's almost impossible to create flares.
Other than that, they're great :wink:
IB subwoofer FAQ page
"Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-BressonComment
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I feel your pain man!Originally posted by ThomasWJPComment
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How so? If the area of the mouth remains the same, then the length stays the same (For the same tuning).Originally posted by ThomasW
I agree though, a length PVC pipe is easier, and flares are nice
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My bad, I didn't make myself clear. I meant with regard to integrating them into the design of the box, Not actually calculating area.How so? If the area of the mouth remains the same....
IB subwoofer FAQ page
"Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-BressonComment
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I once did an MTM design with a slot port. In that case, it was quite easy to incorporate, and had the added benefit of acting as a great side wall brace. I located the slot port directly behind the tweeter. As someone mentioned, if the mouth area is the same as a tube vent, the length should be the same as well. If you want to do a flare, a 3/4" flare is easy assuming you are using 3/4" material for the brace. You can flare both ends as well. Bigger flares could be built with some "backup" material on either end I suppose.Comment
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