Hello. I was wondering if anyone had documentation on summation of HF sources through short horns? Looking at the EAW Anya and similar HF arrays, they appear to be using several HF drivers stacked together with short conical horns instead of the typical line array waveguides.
When sources are within 1/4 wavelength or shorter they tend to sum more cohesively, right? But is that at the source or at the exit of a horn for the distance? It would appear that the Anya uses several short and slightly bent horns. I'm wondering if anyone has tried something similar. It would appear that the Anya has very little or no verticality in the horns and that every other one shifts horizontally as they are stacked.
When sources are within 1/4 wavelength or shorter they tend to sum more cohesively, right? But is that at the source or at the exit of a horn for the distance? It would appear that the Anya uses several short and slightly bent horns. I'm wondering if anyone has tried something similar. It would appear that the Anya has very little or no verticality in the horns and that every other one shifts horizontally as they are stacked.
They may have to shift horizontally to be stacked, but as long as the horn sections are small at the end of those sections, there's a chance. I wouldn't say it's anything to do with being within a quarter of a wavelength, it could be done much further as long as the right care is applied.
So assuming it works, you end up with a line source.
So assuming it works, you end up with a line source.
"Short" is relative to the wavelength. The Anya HF horn throats are longer than the 2000 Hz wavelength they cross in at.
The EAW Anya is a departure from a "typical line array" throat design, each of the 14 HF and 6 MF drivers sharing the same horn exit use DSP to shape the exit wavefront.