Add a driven element to simulate a woofer and you will complete the picture
The roundovers (or not) on the back and width depth ratios affect the woofer pattern much more than they do a waveguides.
It's possible to place the waveguide anywhere on a front baffle of any size but what you suggest would require quadrupling the number of BEM elements and considerably longer calculation time - something I won't try at the moment (up to now everything was in 1/4 symmetry). I leave that as an excercise for others...
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A woofer can be simulated separately by means of the Source Definition Script. Any diaphragm profile can be defined that way.Add a driven element to simulate a woofer and you will complete the picture
Hmm, higher DI < 1kHz with deeper enclosure, interesting. Perhaps it is just sound going around the enclosure, path length around the enclosure elongates total 11cm from the slim to middle, then 17cm from middle to deepest, and the "boost" seems to move from ~1.2kHz to ~1kHz and down to ~800Hz. Diffence is not big though, maybe 1-2db difference total on 800Hz between on axis and back for example. Made gif from the responses.
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Doesn’t take much work to be honest. Fusion 360 CAM is great but I do have issues with surface finish using scallop / change of tool path direction. Maybe some backlash in the old ball screws! Here’s the almost finished tool. A little sanding and polishing to go.
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Because a finite baffle width and depth diffracts creating directivity, and confining the angle increases output.
The best baffle for a waveguide is the one with least excess flat area either side. A decent roundover or chamfer right next to the guide works like a bigger termination.
Look at the infinite baffle example youd that that the closer you moved towards it...the better things get.
