Hello,
I would like to print a ATHGen2 horn, but i am a bit lost with the Throat Adapters. I have Altec 806, do someone could tell me which adapter should i take?
Maximilien
I would like to print a ATHGen2 horn, but i am a bit lost with the Throat Adapters. I have Altec 806, do someone could tell me which adapter should i take?
Maximilien
Ok I only enabled output.abecproject and it doesn't show any error now. But when I'm importing project to Akabak it gives an error. And it doesn't export .csv either:
ERRORS ------------------------
(12) Script problem at identifier "Elements - SD1": Unknown
Problems resolving RefElements=
ERRORS ------------------------
(12) Script problem at identifier "Elements - SD1": Unknown
Problems resolving RefElements=
Hi
@mabat
I did as suggested and edited the 2 nodes. Well...it makes a "slight" difference.
Original script with horn back going through driver membrane:
With the 2 nodes edited:
Difference in 3D view in ABEC:
It is point 167 & 168
Please ignore the horrible dispersion. Just the results of trying around more and more weird values and beeing confused by their results before you gave me the hint how to solve the problem.
Is there any chance this can be changed in script directly? Open nodes.txt for every iteration is making each iteration x2 the time....
Maybe easiest to change my source contours script somehow? It has point in + an - direction of z set point...
Source.Contours = {
zoff 0
point p1 -1.5 0 1
point p2 -2.3 5.3 1
point p3 -3.7 10.5 1
point p4 -6.8 17.7 1
point p5 -16.9 34.8 1
point p6 -25 44.6 1
point p7 -23.4 48.3 1
point p8 -4.5 77.1 1
point p9 5.1 86.1 1
point p10 0 92.2 1
line p1 p2 1
line p2 p3 1
line p3 p4 1
line p4 p5 1
line p5 p6 1
line p6 p7 1
line p7 p8 1
line p8 p9 0.8
line p9 p10 0.5
line p10 WG0 0
@mabat
I did as suggested and edited the 2 nodes. Well...it makes a "slight" difference.
Original script with horn back going through driver membrane:
With the 2 nodes edited:
Difference in 3D view in ABEC:
It is point 167 & 168
Please ignore the horrible dispersion. Just the results of trying around more and more weird values and beeing confused by their results before you gave me the hint how to solve the problem.
Is there any chance this can be changed in script directly? Open nodes.txt for every iteration is making each iteration x2 the time....
Maybe easiest to change my source contours script somehow? It has point in + an - direction of z set point...
Source.Contours = {
zoff 0
point p1 -1.5 0 1
point p2 -2.3 5.3 1
point p3 -3.7 10.5 1
point p4 -6.8 17.7 1
point p5 -16.9 34.8 1
point p6 -25 44.6 1
point p7 -23.4 48.3 1
point p8 -4.5 77.1 1
point p9 5.1 86.1 1
point p10 0 92.2 1
line p1 p2 1
line p2 p3 1
line p3 p4 1
line p4 p5 1
line p5 p6 1
line p6 p7 1
line p7 p8 1
line p8 p9 0.8
line p9 p10 0.5
line p10 WG0 0
For the purpose of this particular simulation, you could try this (the shape can be different):
So the promised user-defined back side as a cubic Bezier curve:
Mesh.RearShape = 5 ; closed back
Mesh.RearCubic = -60,2,50,-80,5 ; [mm]
https://at-horns.eu/ext/ath-4.9.0-pre-230109-2.zip
You will lose LF directivity this way. To regain, you will probably need to increase the overall size. That's the drawback I see.
Mesh.RearShape = 5 ; closed back
Mesh.RearCubic = -60,2,50,-80,5 ; [mm]
https://at-horns.eu/ext/ath-4.9.0-pre-230109-2.zip
You will lose LF directivity this way. To regain, you will probably need to increase the overall size. That's the drawback I see.
I would choose the one most closely matching the exit angle of the driver, but I'm not familiar with Altec 806. Or if it requires a special mounting, a special adapter can be easily designed, just let me know.I have Altec 806, do someone could tell me which adapter should i take?
Every 4" diaphragm/ 2" exit compression driver on a big enough horn? Axi2050?It is hard to find a comression driver that plays down to 300Hz
The A520 loads my JBL2452 so well. Ended up with a 500Hz crossover on my mock-up speakers and it sounds really good as well as having low distortion. Maybe you are able to test one crossed even lower in a bigger horn? On vacation, can post measurements later.
Thing is I have never crossed any JBL 4" driver lower. Not in a gigantic JBL 2360 horn nor in a Le Cleach 200 Hz. (Almost a meter wide). I do however cross lower with a 2490 in a way bigger horn.
For me an A520 looks positively smallish and compact. Really thankful for this new "best" in freestanding horns. Having the loading of a Le Cleach 270 but beeing way smaller, sounding and measuring really smooth even in the top octaves while beeing rather constant in directivity as opposed to the beaming of a JLMC the A520 is a killer. That said Im dead certain there will be a bigger one in the Bambu printer as soon as I get home. How do people stand holidays longer than a weekend?
Thing is I have never crossed any JBL 4" driver lower. Not in a gigantic JBL 2360 horn nor in a Le Cleach 200 Hz. (Almost a meter wide). I do however cross lower with a 2490 in a way bigger horn.
For me an A520 looks positively smallish and compact. Really thankful for this new "best" in freestanding horns. Having the loading of a Le Cleach 270 but beeing way smaller, sounding and measuring really smooth even in the top octaves while beeing rather constant in directivity as opposed to the beaming of a JLMC the A520 is a killer. That said Im dead certain there will be a bigger one in the Bambu printer as soon as I get home. How do people stand holidays longer than a weekend?
I'm glad you like it. All you just mentioned were the goals of the design, so I'm really happy that someone actually appreciates them.
Hello folks,
I also have a problem with ATH4. I get an error message when importing the .abec file into Akabak and the import is accordingly faulty.
This is the error message when importing the project file into ABEC
This is my .cfg file:
And this is my driver file
Greetings poiy
I also have a problem with ATH4. I get an error message when importing the .abec file into Akabak and the import is accordingly faulty.
This is the error message when importing the project file into ABEC
ERRORS ------------------------
(12) Script problem at identifier "Elements - SD1G0": Unknown
(16) Script problem at identifier "Elements - SD1D1001": Unknown
(23) Script problem at identifier "Elements - SD1D1002": Unknown
(30) Script problem at identifier "Elements - SD1D1003": Unknown
(41) Script problem at identifier "Infinite_Baffle #3": Unknown
Problems resolving RefElements=
Problems resolving RefElements=
Problems resolving RefElements=
This is my .cfg file:
; --------------------------------------------------------------
; Horn geometry
R-OSSE = {
R = 40
r0 = 17.135
a = 60
a0 = 13
k = 1
m = 1
r = 1
b = 0.03
q = 5
}
; --------------------------------------------------------------
; Acoustic Source - Bliesma T25B
Source.Contours = C:\Program Files\ath4\cfg\dome.src
Source.Velocity = 2
; --------------------------------------------------------------
; Transducer LE Model
; LE = <LE_script_file>
; --------------------------------------------------------------
; Basic Geometry
Morph.TargetShape = 0
Mesh.AngularSegments = 32
Mesh.LengthSegments = 20
Mesh.ThroatResolution = 5.0
Mesh.InterfaceResolution = 8.0
Mesh.InterfaceOffset = 5.0
; --------------------------------------------------------------
; General Simulation Parameters
ABEC.SimType = 1
ABEC.f1 = 1000 ; [Hz]
ABEC.f2 = 20000 ; [Hz]
ABEC.NumFrequencies = 40
ABEC.MeshFrequency = 1000 ; [Hz]
; --------------------------------------------------------------
; Observations
ABEC.Polars:SPL = {
MapAngleRange = 0,180,37 ; 0 – 180 deg with 5 deg step
NormAngle = 20 ; [deg]
Distance = 3 ; [m]
}
; --------------------------------------------------------------
; Program output
Output.ABECProject = 1
Output.STL = 0
; --------------------------------------------------------------
; Reporting
Report = {
Title = "horn example"
Width = 1600
Height = 900
}
And this is my driver file
I would appreciate any help;Bliesma T25B
zoff -2
point p1 4.239 0 2
point p2 0 12.5 0.5
point p3 -1.003 13.76 0.5
point p4 0 15.02 0.5
point p5 0 17.135 1
cpoint c1 -16.311 0
cpoint c2 0.29 13.76
arc p1 c1 p2 1.0
arc p2 c2 p3 0.75
arc p3 c2 p4 0.25
line p4 p5 0
line p5 WG0 0
Greetings poiy
You should be using ABEC with Ath, not Akabak. There's still the PRO version available from the official webiste (to be used as a demo, without a key) - http://www.randteam.de/_Software/ABEC3_Pro/Download-ABEC-Pro.html
Ath is old and won't change...
Ath is old and won't change...
Tritonia-S prototype for verification, from the printer directly to the speaker stand -
(roughly 0 - 50/10deg)
This is of course absolutely not how it's supposed to be used, but I know people will use it like this anyway, so why not.
It's certianly not a complete disaster, which I assume is due to the rectangular shape. Measured with the Peerless DFM-2535.
In an enclosure this should be textbook. Printed in one piece, essentially, this is a no-brainer.
(roughly 0 - 50/10deg)
This is of course absolutely not how it's supposed to be used, but I know people will use it like this anyway, so why not.
It's certianly not a complete disaster, which I assume is due to the rectangular shape. Measured with the Peerless DFM-2535.
In an enclosure this should be textbook. Printed in one piece, essentially, this is a no-brainer.
Last edited:
I'm slowly learning and already printing one but when I open it to abec it's oval. What's the problem?
Hmm where did attached image go... I bought 520 horn and attached that script to ath. Then used that .abec file in abec but it's oval.
Last edited:
Hmm, I've never seen this, nor have an idea how this could even originate. Puzzling.
Is it really ABEC, not AKABAK?
Is it really ABEC, not AKABAK?
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