Electro-Voice Constant-Directivity Horn HP640 دليل المستخدم

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HP640
Constant-Directivity
Horn
General Product Description
®
The Electro-Voice HP640 is a wide-range, flat-front,
constant-directivity, high-frequency horn. With the
HP640, a horizontal dispersion angle is controlled over
a frequency range of 500 Hz to 20 kHz, and the vertical
angle is controlled from 1.5 kHz to 20 kHz, both with
unusual precision and adherence to the intended angle.
Furthermore, excellent loading is maintained to a low
frequency of 500 Hz.
The flat-front design makes the HP64

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Ds imensions: Inche A8 1.93 B0 5.0 C0 13.0 D0 28.0 E0 4.0 F4 0.281 x G0 17.2 H5 16.9 Figure 1: Dimensions Directivity Beamwidth The axial directivity factor R (formerly Q) of the HP640 horn A plot of the HP640’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 60° this da