| 1. | Electro-Voice Speaker System HP64 User Guide General Product Description The Electro Voice model HP64 is a wide range flat front high frequency constant directivity horn The horizontal angle is controlled over a frequency range of 1 7 kHz to 20 kHz and the vertical angle is controlled from 1 8 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 HP64 suitable for all modern boxed and |
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