Open source Waveguides for CNC & 3D printing!

Ok Guys, i got my own Speaker Build Thread here:

 
Printed a sb26 4inch waveguide. I changed the outside shape to match the original round faceplate size.
For this one I also cut the lower part to match an sb12mnrx2.
@augerpro , I saw you did a special 5 inch version for the sb26STAC. It seems to behave better above 10k. What is the difference with the one done for sb26cac/cdc? Would it be possible to make the same on the 4inch ?
PXL_20250617_200928976.jpg
 
Yes I need to do a 4" for the SB26STAC but just haven't had the time. It requires a different profile than the metal SB26s so you can't use those waveguides.

Thanks for all the effort and time you put there!

Please when you update the 4" stac waveguide let us know!

PS. My bad, i saw that you have deleted the previous versions of the stac so we can check ourselves! Thanks again!
 
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Measuring all 4 prototypes today. Verifying the baffle diffraction model and whether roundover or chamfer works best. I tried my best match the baffle diffraction to the native response of the drivers - mostly the woofer. Model 1 is Satori textreme and Be, Model 2 is SB "ceramic", Model 3 is SB's entry level drivers, and Model 5 is Scanspeak Discovery and either SB26STAC or CAT308. All tweeters on waveguides of course.

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hi brandon,

In the crossover filter development phase, in the speaker driver far field measurements, is the measurement microphone position facing the waveguide center or a position between the mid driver and the waveguide?