Exponential Waveguide for 25mm Tweeters
thingiverse
The waveguide features a throat dimension of 31.75mm and an identical cutout diameter of 148mm as the Visaton waveguide, but it boasts four screws and a comparable yet subtly different curve. Upon inspection, the Visaton appears to seamlessly integrate two curves into its design. To replicate this profile, I employed a conic curve with a rho value of .38, which should provide similar performance while minimizing throat size.
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