Compression 18sound en Be

[drba]

Je connaissais ce lien
Attention aux courbes
Ces trompes ( ALO ) ont des profils aux fins de directivité «  constante » ( comme les Xshape de speedbad) ..
elles nécessitent  une correction de courbe .. ( et sont ultra lissées )
cdt
Roland

I missed this response. I would like to state that my curves are not ultra smoothed! And my profile is by no means comparable to x-shape! And my horns are not constant directivity in a strict sense. The inner profile is smooth without any abrupt changes. The goal is a slight narrowing of directivity control towards higher frequencies, together with optimized acoustic loading. In my horns the crossover point can be as low as possible.

I also always emphasize the method how the curves have been measured with mic very close to the mouth and that the overall correction is much smaller in reality when the mic is 1m away or more. But when the mic is close to the mouth all room effects are largely avoided.

I also commented that the TH4003 is imo a not good performing device wrt to high end sound quality. neither the acoustic loading nor the directively control properties are acceptable wrt to modern high end requirements.