Sometimes a slightly provocative headline is necessary to attract attention. Please don’t take it too seriously. But it should be well known that the origin of my activities regarding horn development was dissatisfaction with these types of horns. Personally, I just couldn’t live with the fact that these horns consistently focus the sound extremely narrowly (beaming). There is more or less a very small sweet spot where you can experience the full spectrum of the music. If you move away from the sweet spot, the sound image collapse very quickly. What I have also noticed repeatedly as a negative aspect is that the on-axis listening experience is often very direct, tiring, or even annoying in the high-frequency range. As always, perception is subjective, and it may well be that there are people who explicitly like this. It is important to me to emphasize that I am not claiming that my opinion is the only valid one. Nevertheless, in this article, I would like to describe and also demonstrate with help of a BEM simulation why I have come to this conclusion and why I consider these horn types to be obsolete. Continue reading
Category Archives: JMLC Horns
A Nice DIY Project Using my JMLC Inspired Horn Calculator
Recently, I got a request to help with some questions regarding the use of JMLC inspired Horn calculator. Usually, I have not much spare time to help in detail, but this time was indeed different because there was a well balance of give and take.
Adam contacted me with a very nice performance JMLC horn using PETF to optimize the profile with respect to better directivity control while greatly preserving loading. It is not as good as my WN300, but I was surprised about the results. With some minor suggestions from my side to further optimize PETF parameters, Adam worked almost without my help using his own workflow. It has been proven that my splines export function is working perfectly to create a step file and then mesh the BEM components using GmsH.
Exporting Splines from JMLC HVDiff Worksheet
Surprisingly, the JMLC articles are constantly among the most read here. My corresponding JMLC worksheets can already be found in the Download section of my webpage since some time. Recently, I got the request that in addition to the existing point cloud export it should also be possible to export splines for each step along the horn axis as many CAD programs can import and loft such splines much more elegant than to mesh a point cloud. Fortunately, I implemented the splines feature already for my William Neile worksheets so it was no big thing to migrate the feature also for the JMLC HVDdiff worksheet.