Thanks! I`ll give the pressure screen a try. The horn data in your link is for a horn with a much larger mouth?
Would reflections caused by a too small mouth (contour not "full") be visible in the simulations? I think the differences in the plots are small. My Le Cleach example seems to have rather smooth response in the simulation.
Thanks a lot ! Just played with it. Filter set on a 0° directivity can be kept ON and so we can lauch a directivity polar pattern taking account of filter setting. Magical. So i can now try to correct my built error so easier, more confident.
And i just came to a very satisfaying variation arround 6th parrallel band pass feeding a little segment simmed as TH thanks to hornresp, with really good bandpass effect. Group delay, excursion, size, bandwith, particule velocity...everything seems really good compromise. It need Qes 0,23, light mss 12" sub (around 85gr), so small long voicecoil. Will have to custom one
Attachments
schematics of speaker boxes in Hornresp manual
Dear David ,
Thanks for your kind email response and here are a couple of suggestions that would make using HORNRESP at lot easier for us ,or me.
- having drawings of cross sectional speaker boxes of different sorts ie..transmission lines,scoops etc. with named abbreviations relating to software input fields.
-how can we model transmission lines with sealed or vented Front chambers.
Thank you so much for putting the effort into this amazing program.
I already used it to build one of the most beautiful subs ever.
Dear David ,
Thanks for your kind email response and here are a couple of suggestions that would make using HORNRESP at lot easier for us ,or me.
- having drawings of cross sectional speaker boxes of different sorts ie..transmission lines,scoops etc. with named abbreviations relating to software input fields.
-how can we model transmission lines with sealed or vented Front chambers.
Thank you so much for putting the effort into this amazing program.
I already used it to build one of the most beautiful subs ever.
Hm.. I can`t say I find this pressure screen..
Should a throat adapter be used with the example Le Cleach further up? I tried to use the throat adaptor designer, but I`m not sure what the D1 and D2 is? Is D2 the same as the diameter of the driver ( Atc)? Is the D1 the same as the width/height at S1 (Ap1)? Is the driver front volume the same as Vtc? what would the throat adaptor look like?
Hi mgabr,
Not a problem
.
The reason that cross-sectional drawings are not provided is primarily because there are just so many different loudspeaker designs to choose from. I have attempted to include band pass enclosure drawings, which are relatively simple, but even then, problems have arisen in how they should be interpreted.
The Input Wizard tool, accessed from the Help menu, can always be used if you are not sure which input parameters apply to a particular design.
I am not certain that I understand what you mean by a transmission line with a sealed or vented front chamber. Can you provide further details, please?
(Questions relating specifically to Hornresp can be posted to the main Hornresp thread, which keeps everything in the same place, and helps to avoid the proliferation of multiple small threads on the same general subject).
Kind regards,
David
Not a problem
.The reason that cross-sectional drawings are not provided is primarily because there are just so many different loudspeaker designs to choose from. I have attempted to include band pass enclosure drawings, which are relatively simple, but even then, problems have arisen in how they should be interpreted.
The Input Wizard tool, accessed from the Help menu, can always be used if you are not sure which input parameters apply to a particular design.
I am not certain that I understand what you mean by a transmission line with a sealed or vented front chamber. Can you provide further details, please?
(Questions relating specifically to Hornresp can be posted to the main Hornresp thread, which keeps everything in the same place, and helps to avoid the proliferation of multiple small threads on the same general subject).
Kind regards,
David
Attachments
Yes, my questions were perhaps not crystal clear.. But I still have to find out if a throat adapter is needed? If so, I got confused by the numbers D1, D2 and the angles that are already there when I opened the Throat Adaptor Designer. And they doesn`t change when inputing numbers in Ap1 and Lp in the Input Parameters screen.
Attachments
OK. I have seen some examples of throat chambers on horns with cone drivers, but I don`t know when it is required or recommended..
It's probably not going to be beneficial to add an extra volume to the interface between the driver and horn.
I have observed that when you get into the midrange and higher up there are many creative attempts at minimizing the volume between the driver and horn with phase plugs and similar devices as you typically see built into compression drivers.
The Throat Adaptor Designer is a stand-alone tool, it does not interact in any way with the Input Parameters window. The default values shown when the tool is opened are just indicative values to generate a representative result. The tool is normally used when designing an axisymmetric (circular cross-section) transition piece to match a given compression driver to a given horn.
For example, to match a compression driver with an outlet diameter of 1 inch and an outlet half-angle of 6 degrees, to a horn with a throat diameter of 1.5 inches and a throat flare tangent angle of 10 degrees:
D1 = 25.4 mm (1" transition entry diameter)
A1 = 6 degrees (transition entry flare tangent angle)
D2 = 38.1 mm (1.5" transition exit diameter)
A2 = 10 degrees (transition exit flare tangent angle)
The resulting transition piece will have an axial length of 45.2 mm, as shown in Attachment 1. The exported dimensional data required to make the transition piece, is given in Attachment 2.
