Sometimes 4.9 does this, slight changes in mesh might sideline the issue. I have not found out why it would get stuck in a loop. Currently my computer is simulating and I do not want to mess with the ABEC project.
Solution for previous release is in #11019. You had posted right after I edited.
Solution for previous release is in #11019. You had posted right after I edited.
Would this help to solve my issue? I am still troubleshooting but I have no clue what causes the problem.
I recently updated to Windows 11. Today I have uninstalled and reinstalled both ABEC, as well as VACS.
I ran a 200 frequencies simulation overnight and the phase issue was still present. It was based on the mesh settings that limacon had provided. IIRC, his served okay. After reinstalling ABEC and VACS I ran a lower resolution 50 frequencies simulation of the same mesh with all the same settings. The first mesh generated with Ath 4.9, the second with Ath 4.8.3.beta2.
The issue is equally present in the FRDs of the ABEC simulations that the different versions generated.
I forgot saving the ABEC folder from the 200 frequencies run, but have the FRDs. I attached a bulk of files for anyone who might find in them the cause of this. The box geometry is basically unchanged since many months and had been simulated without this issue before.
In the drivers section of Vituix under the list of response files there is a check box for minimum phase. You can tick that and see if all the wrapping disappears and leaves a nice trace, if it does then something has gone wrong in compensating the propagation delay in the Ath FRD export.
Did you calculate the fields?
Check down on the bottom bar and see if fields are green or red once they have been calculated you can click on the frequencies shown in your image to view the field for that frequency.
I did not calculate the fields. Thank you, calculating the fields made the spherical field observation work in ABEC. This answers the question of how to make the spherical field / SphericalFields observation work with ABEC and ATH Horns (sorry, ham-handedly trying help the search engines). Now I need to figure out how to use the results and understand what they tell me.
Attachments
Long time lurker here, I've been reading everything here since the beginning. Here's my attempt at making a unity tapped OS waveguide speaker. All processing done actively on PC then over HDMI to an AVR with 6 channels
EDIT: FaitalPro HF108-R compression driver with Lavoce FSN030.72, waveguide generated with ATH
EDIT: FaitalPro HF108-R compression driver with Lavoce FSN030.72, waveguide generated with ATH
Attachments
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I love this so much!
I literally spent 20 hours screwing around with various array options over the weekend, and after reflecting on it for days, realized I should probably just do something like a Lambda Unity horn...
Which is what you've done...
And the results are great!
Thank you for the inspiration.
I literally spent 20 hours screwing around with various array options over the weekend, and after reflecting on it for days, realized I should probably just do something like a Lambda Unity horn...
Which is what you've done...
And the results are great!
Thank you for the inspiration.
@SubTweeter that's quite the entrance, posting something like this in your 3rd post on the forum. Well done! Don't talk about it, just do it 
.
Did you get the waveguides professionally printed or CNC-ed?
.Did you get the waveguides professionally printed or CNC-ed?
Impressive work! I have been thinking about this a lot (and many have speculated about an ATH-MEH). The ATH-generated waveguides are so good. I have been wondering about measurements either before the midrange ports are cut or with them covered. You don't happen to have those, do you? It would be very interesting to compare them with the graphs in your second attachment.
Bill
Bill
I printed it in two halves on my CR10-V3, epoxied it together. Used some heat-set nut inserts and screws as alignment pins/clamps
Attachments
They certainly are
I had this problem with my previous attempts, but I believe I fixed it with the current Area-51 version.
I've attached some measurements and photos of the previous version. I was lazy with the design and extended the midrange taps/ports far enough so everything could be mounted flat on the rear.
There was some kind of cancellation at 4400hz
Here are two measurements, one with tape covering the ports
Reducing the port length, also slightly smaller diameter, seemed to fix it
Beautiful work!
Would you use something like Leonard Audio Transmission Line to help calc the port size, perhaps an exp flare across the whole driver face?
I think I could do the same on my large ATH WG with some Faital 3FE22 or Beyma 3FR30.
Can you share your ATH4 2x2 report?
Another project for Christmas!
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