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Enclosure Design & Construction
Quick reference guide to slot ports with 3 common walls
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<blockquote data-quote="Buck" data-source="post: 8739072" data-attributes="member: 591582"><p>I make all of my own volumetric calculations. I use several different methods to see what size I want a box and what the port area needs to be and how far small or large I can go with any parameter. I figure out the cubic feet, port area and tuning I optimally want, then I manually use my spreadsheets to calculate volume very precisely. Very very precisely. Different styles of slot ports take up different amounts of space. Center slot ports, if they bend, the port becomes 1/4 of the width of the port longer vs displacement because of how the turn at the back wall happens when it splits in two. It depends on the size of the box, but for like a 1 cube box I'm within a few thousandths of a cubic foot of what I tell you the airspace is and with larger boxes, say like 5-10 cubes, I'm within a hundredth usually of the airspace I actually need. When the volume of a box changes, literally relative port area and tuning change as well. You gotta be on point with your volumes.</p></blockquote><p></p>
[QUOTE="Buck, post: 8739072, member: 591582"] I make all of my own volumetric calculations. I use several different methods to see what size I want a box and what the port area needs to be and how far small or large I can go with any parameter. I figure out the cubic feet, port area and tuning I optimally want, then I manually use my spreadsheets to calculate volume very precisely. Very very precisely. Different styles of slot ports take up different amounts of space. Center slot ports, if they bend, the port becomes 1/4 of the width of the port longer vs displacement because of how the turn at the back wall happens when it splits in two. It depends on the size of the box, but for like a 1 cube box I'm within a few thousandths of a cubic foot of what I tell you the airspace is and with larger boxes, say like 5-10 cubes, I'm within a hundredth usually of the airspace I actually need. When the volume of a box changes, literally relative port area and tuning change as well. You gotta be on point with your volumes. [/QUOTE]
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Quick reference guide to slot ports with 3 common walls
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