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Enclosure shape on Port box, does it matter?
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<blockquote data-quote="Affray" data-source="post: 8787350" data-attributes="member: 685781"><p>[ATTACH=full]37528[/ATTACH]</p><p>Hi All,</p><p>Hope someone can help <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>I've been watching a lot of videos, reading up all over and learning how to use winISD. All with the result that the more I learn the more I realise how little I know <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>Anyway, for my sub, a 13w7 winISD has recommended a ported box at 171.92 litres and thankfully I have the space <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> I'm still fine-tuning the port, but the tuning frequency will be around 20.43 hz and it will be a slot design that is run externally outside of the box to keep things simple (current size is 76mm by 369mm by 1031.8mm).</p><p></p><p>The question for now <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite24" alt=":unsure:" title="Unsure :unsure:" loading="lazy" data-shortname=":unsure:" /> is the design of the "sealed" part of the vented box.</p><p></p><p>I have two very crude drawings above, A & B. From a design point of view having a box that goes all over the place as in B would be better as it would allow me to minimise the workspace lost in the back of my van. I can do a design like A but B would be better. Work-wise there is little in it, yes B is harder to build, but A would require more altering of shelving racking etc.</p><p></p><p>My concern/question is would the different enclosure shapes of the "sealed" part of the box make any difference to the sound (air being compressed to different pressures within an odd shape box say or harder for some parts to escape/enter via the port) or does it make zero difference?</p><p></p><p>Huge thanks in advance <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Affray, post: 8787350, member: 685781"] [ATTACH type="full"]37528[/ATTACH] Hi All, Hope someone can help :) I've been watching a lot of videos, reading up all over and learning how to use winISD. All with the result that the more I learn the more I realise how little I know :(:D Anyway, for my sub, a 13w7 winISD has recommended a ported box at 171.92 litres and thankfully I have the space :) I'm still fine-tuning the port, but the tuning frequency will be around 20.43 hz and it will be a slot design that is run externally outside of the box to keep things simple (current size is 76mm by 369mm by 1031.8mm). The question for now :unsure: is the design of the "sealed" part of the vented box. I have two very crude drawings above, A & B. From a design point of view having a box that goes all over the place as in B would be better as it would allow me to minimise the workspace lost in the back of my van. I can do a design like A but B would be better. Work-wise there is little in it, yes B is harder to build, but A would require more altering of shelving racking etc. My concern/question is would the different enclosure shapes of the "sealed" part of the box make any difference to the sound (air being compressed to different pressures within an odd shape box say or harder for some parts to escape/enter via the port) or does it make zero difference? Huge thanks in advance :) [/QUOTE]
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Enclosure shape on Port box, does it matter?
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