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Air Loudpeakers
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<blockquote data-quote="Air" data-source="post: 649694" data-attributes="member: 15182"><p>Thanks Carl, glad you liked what you heard. <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>The test with the prototype waveguide was indeed enlightening, but presented a mixed bag of insights. Without going into the details, it works as per theory and simulations. Constant Directivity is achieved in the desired frequency range, but at the cost of a very ragged top octave response. I have looked into the possible reasons for this less than ideal response and have based on further simulations, designed a few more profiles to further this investigation of waveguides for tweeters. </p><p></p><p>In the envisaged 3-way with the mid driver I have decided on, the benefits of the use of a waveguide seems to be marginal. I still will do some more tests with different designs, as I think that with the 2 ways with bigger midbass drivers it might be more beneficial to shape the response of the tweeter to blend in better at and around crossover frequencies. The default profile of the faceplate of the tested tweeter seems to be well thought through and the designers clearly know what they are doing. <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="Air, post: 649694, member: 15182"] Thanks Carl, glad you liked what you heard. :) The test with the prototype waveguide was indeed enlightening, but presented a mixed bag of insights. Without going into the details, it works as per theory and simulations. Constant Directivity is achieved in the desired frequency range, but at the cost of a very ragged top octave response. I have looked into the possible reasons for this less than ideal response and have based on further simulations, designed a few more profiles to further this investigation of waveguides for tweeters. In the envisaged 3-way with the mid driver I have decided on, the benefits of the use of a waveguide seems to be marginal. I still will do some more tests with different designs, as I think that with the 2 ways with bigger midbass drivers it might be more beneficial to shape the response of the tweeter to blend in better at and around crossover frequencies. The default profile of the faceplate of the tested tweeter seems to be well thought through and the designers clearly know what they are doing. :) [/QUOTE]
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Air Loudpeakers
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