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Does tapped horn behave same as bass reflex ports?

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Augusts View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Augusts Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2022 at 12:47pm
Those are interesting ideas. They were level matched, and we achieved the best results while slightly angling them towards the center of the dancefloor they they sounded really good, but as soon we put them straight there was a cancellation on the dancefloor. Vs rephex subs worked in any position

Edited by Augusts - 24 December 2022 at 12:47pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Augusts Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2022 at 12:53pm
Im no genious but rephlex sub works through the port that acts like a spring mostly and a bare cone whereas horns work by amplifiing and creating the low end spectrum acoustically and it takes a longer way until the sound exits the horn. Also sitting very close to the horn there is less bass then if sitting right next to the port. Correct me if Im wrong
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2022 at 3:07pm
Originally posted by Augusts Augusts wrote:

Im no genious but rephlex sub works through the port that acts like a spring mostly and a bare cone whereas horns work by amplifiing and creating the low end spectrum <span style="-webkit-tap-highlight-color: rgba0, 0, 0, 0;">acoustically and it takes a longer way until the sound exits the horn. Also sitting very close to the horn there is less bass then if sitting right next to the port. Correct me if Im wrong</span>


The fundamental acoustic properties of radiation remain the same.

What you need to consider is the complex acoustic impedance and the dimensions of all of the radiating elements, including the physical distances to mirror image sources, room modes, and so on, all the way back into the horn or cabinet.

It's not as simple as the massive generalisations you're making.

For ‘pure’ horns — which a tapped horn is not — these papers are a good start:
https://www.aes.org/e-lib/browse.cfm?elib=19427
https://www.aes.org/e-lib/browse.cfm?elib=17969
https://www.aes.org/e-lib/browse.cfm?elib=20265

Quote Large Horns and Small Rooms - Do They “Play Nicely” Together?
Document Thumbnail

For some audiophiles, having a huge, low-cutoff bass horn built into the wall of the listening room represents the ultimate low frequency solution. Without considering the practicalities of such an installation, this paper will look at the performance of low frequency horns mounted in the wall of a small room compared to the performance of a typical point source closed box type sub-woofer and an array of such sub-woofers. Simulation results indicate that in addition to higher efficiency, the horns provide smoother response in the listening position and less seat-to-seat variation.


But you're going to have to dig into serious acoustic texts to look deeper into it. Try Sound Intensity and other books by Frank J. Fahy.


Edited by toastyghost - 24 December 2022 at 3:12pm
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