Electro-Voice TransPlanar Constant-Directivity Horn HP94 user manual

Summary of the content on the page No. 1

HP94
™
TransPlanar
Constant-Directivity
Horn
General Product Description
®
The Electro-Voice model HP94 is a wide-range,
flat-front, high-frequency, constant-directivity horn. The
horizontal angle is controlled over a frequency range
of 1.2 kHz to 20 kHz and the vertical angle is controlled
from 2.1 kHz to 20 kHz, both with unusual precision
and adherence to the intended angle. Furthermore,
excellent loading is maintained to a low frequency of
1000 Hz.
The flat-front design makes the HP94 suita

Summary of the content on the page No. 2

Ds imensions: Inche A8 1.93 B0 5.0 C5 8.7 D0 11.0 E0 4.0 F4 0.281 x G8 8.6 H9 8.4 Figure 1: Dimensions Directivity Beamwidth The axial directivity factor R . (formerly Q) of the HP94 horn A plot of the HP94’s 6-dB-down total included beamwidth θ was computed at each one-third-octave center frequency from angle is shown in Figure 3 for each one-third-octave center the horizontal/vertical polars. The graph in Figure 2 illustrates frequency. The horizontal beamwidth is maintained at 90° this dat