Hornresp

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#15,426
Thanks campbell p for confirming that you are using Windows.

It is very strange indeed that Hornresp works just fine for me but not for you or Tacchi778. In an attempt to identify the reason for this, could you please conduct the following three tests in the order given, and let me know the outcomes.

TEST 1

a. Select the existing record that does not work.
b. Click the Edit button.
c. Select the Tools > Chamber Type > Throat Ported menu commands.

Q1. What is shown in the Ap1 and Lp input boxes?

TEST 2

a. Import a copy of the export record you posted.
b. Click the Calculate button.

Q2. Is the error still generated with this imported record?

TEST 3

a. Use the Input Wizard to create a TH record using the following options:

Half space
Horn loaded
Tapped
3 segments
Conical
Conical
Conical
No rear chamber
No throat chamber

Q3. Is the error generated with this record?

Many thanks,

David
 
#15,427
Hi Dave,

Can you offer some help with input parameters for this? Thanks!!

1735748327622.png
 
#15,428
BoxBoxBox said:
Can you offer some help with input parameters for this? Thanks!!
Click to expand...

Check thread below, it may give you some guidance

L

Thread 'Hornresp model for Paraflex TOP'

Hello,

I invested some free time to model the Paraflex TOP using hornresp Compound Horn Model CH2 released some months ago. It should give a good approximation once we can't have a perfect model considering this particular design but even using CH2 the results is very different from what people have been measuring.

Any thoughts to improve simulation?

Main differences between model output and measurements:
  • Left knee at 117Hz while measurements shown at 90Hz
  • Big SPL dip at 235Hz and 709Hz while measurements shown 1st dip at 1400Hz~1500Hz

Note: Due to shared holes...

Small front load horn may give you better result. See thread below, post #11, you can find measurements, etc.

L

Post in thread 'Would a small folded midrange horn work?'

freddi said:
Simpler is better.
Click to expand...

Hello Fredi,

I've been playing around with model to get the best output possible from my 10" speaker Snake ESX310, and I reached the attached design that may fit your needs. I has only one bend easy to round.

Total volume: 94L
External dimensions:
Width: 31cm
Height: 58,6cm
Depth: 50cm

I choose dimensions to better fit on top of my Tapped Horn. I also have a 122L version that goes little lower. I'm still thinking witch one I'm going to build in near future. You can easily tune the dimensions to your needs.

Attached FreeCAD model zipped and Hornresp...
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#15,431
Hi BP1Fanatic,

Many thanks for the feedback!

Having heard nothing further from Tachi778 or campbell p I didn't know where to go looking for the problem. The information you have provided has enabled me to hopefully resolve the issue once and for all. I will try to release an update in the next day or so.

Note that switching to stepped segments when clicking from OD2 to OD3 (Ripole) is quite normal.

Thanks again for helping to make Hornresp a better product.

Kind regards,

David
 
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#15,434
David McBean said:
It was hoped that the most recent update would fix the problem. Unfortunately Tacchi778 never came back to advise if it did or not. Are you using Windows and Hornresp Product Number 5700-241216? If so, then could you please export a copy of the record you are using and post the file here so that I can check the data.
Click to expand...

Hello David,

Sorry for not replying earlier; I've been up to my ears with various stuff.

So, the fix you released didn't work right away. I tried completely reinstalling Hornresp while keeping the Drivers folder, and what's weird is that the issue was still there. I called it a day that time. Some time later, I went back to Hornresp, and the issue was resolved seemingly on its own.
A few days later, I built a new PC, moving just the Drivers folder to the completely new system where I freshly installed Hornresp. Since then, I haven't experienced any issues with Tapped Horn mode.

By the way, I think it might be Windows Defender or some new safety features interfering with the lesser-known program. They've been pretty aggressive lately, and I get like a million warning screens every time I install or update Hornresp. Maybe you should try debugging it on Windows 10 version 22H2.
 
#15,436
Hornresp Update 5710-250107

Hi Everyone,

CHANGE 1

The main impulse response chart can now be sampled. Attachment 1 refers.

CHANGE 2

All filter wizard charts can now be sampled. Attachment 2 refers.

CHANGE 3

The colour scheme used for the Linkwitz Transform circuit has been altered. Attachment 3 refers.

CHANGE 4

Further measures have been put in place to prevent the occurrence of the 'Type mismatch' error detailed in Post #15,430. My thanks to BP1Fanatic for reporting the problem.

Kind regards,

David
 

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#15,437
Hi Tachi778,

Tachi778 said:
Since then, I haven't experienced any issues with Tapped Horn mode.
Click to expand...

Thanks for letting me know that Hornresp is now working correctly for you. Unfortunately the previous update only partially addressed the missing data problem. Hopefully the latest release now resolves things completely.

Tachi778 said:
Maybe you should try debugging it on Windows 10 version 22H2.
Click to expand...

Unfortunately my ancient computer restricts me to using Windows 7 only.

Kind regards,

David
 
#15,439
David McBean said:
Proposal:

No new TH2 model required.
Four segments rather than three.
Both a rear port tube and a throat port tube at the same time.

Not sure how long it will take to implement though...

Kind regards,

David
Click to expand...
Are you considering additional segments for front loaded horns too? Since the best way to model non-standard horn profiles seems to be a piecewise linear curve fitting approximation using multiple conical segments, having more segments to work with would be nice. 🙏:worship:
 
#15,440
David McBean said:
Hornresp Update 5700-241212

Hi Everyone,

CHANGE 1

Clicking on a loudspeaker wizard chart now shows the Y-axis value at the frequency given by the mouse pointer location. The information is displayed in the caption line at the top of the form.

The sampling frequency can be changed by dragging the black marker line, or by using the Up, Down, Left, Right, Home and End navigation keys. Press the Esc key to remove the marker.

Attachment 1 refers.

CHANGE 2

Clicking on a loudspeaker wizard chart with the Shift key pressed now shows the system resonance frequency. Previously it was necessary to double-click on the chart. Press the Esc key to remove the green resonance marker.

The sampling and resonance markers can both be displayed at the same time.

The resonance frequency feature is not applicable to the Multiple Entry Horn wizard.

Attachment 2 refers.

[snip]
Click to expand...
In the "Christmas Rush" I forgot to thank you for these changes. Thank you very much David, and best wishes for 2025!
 
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