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Originally Posted by navin Now that we have the volume done I am working on a new box idea. B&T and GTO have seen the first layout of this (the day of the JBL store opening at Attira). It involves using 6mm marine grade ply encased in resin bonded fiberglass. total wall thickness will be 12mm but it should be as stiff as if not stiffer than 25mm MDF. The other advantage of this technique is that you can build boxes to any shape rather easily. |
Hmm yeah. The enclosure in your Skoda RS looks like a good project. Can't wait for it to finish completely.
What Navin is doing is actually overkill. Most people building a fiberglass enclosure wouldn't have a full MDF/ Ply structure underneath. This will be more rigid inspite of not having a 18-25mm wall thickness.
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Originally Posted by low_bass_makker
ya and a little 5 % there and there will not matter much so dont go in such small detail.... |
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Originally Posted by Sam Kapasi
The port is a hollow tube ya, the volume will be super negligible. The old man is too much |
No ya young man, you have to do the mach-mach of accounting for port displacement, driver displacement and sometimes even for bracing ya. Otherwise all these five-five percent will add up and become too much ya. And for ported enclosure, the sound can be very bad ya, if your volume is over or under by 10%.
Btw, port displacement does not mean just the volume of the material used for making the hollow pipe ya. You need to account for it as a solid cylinder. And before the 'old man' points out, when calculating the port displacement, please add the wall thickness of the port to the effective or internal port diameter considered in the volume calculation. Wall thickness is low for PVC but can be high if it's a slot port made of MDF. I'll stop now before you call me old too.
