EV HORN SPEAKER HP640 혼스피커Electro Voice Horn скачать в хорошем качестве

EV HORN SPEAKER HP640 혼스피커Electro Voice Horn

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 HP640 suitable for all modern boxed and clustered systems. A special vaned waveguide throat detail gives the HP640 unusually uniform vertical directivity control in the top octaves when compared to similar 2-inch-throat horn designs. Architects’ and Engineers’ Specifications The horn shall be of the constant-directivity type. It shall produce a horizontal beamwidth (6-dB-down angle) of 60 degrees, deviating no more than 20 degrees from this angle over the frequency range of 500 to 20,000 Hz. It shall produce a vertical beamwidth of 40 degrees, deviating no more than 10 degrees from this angle over the frequency range of 1,500 to 20,000 Hz. In addition, it shall provide useful acoustic loading at all frequencies above 500 Hz. The horn shall be of hybrid fiberglass-and-zinc construction. The initial throat section shall be constructed on die-cast zinc and shall be integrally laminated into the fiberglass portion of the horn. The horn shall possess a throat of 4.9 cm (1.94-in.) diameter, and its flange shall be provided with four clearance holes for ¼-20 bolts, located on a 10.2 cm (4.0 in.) circle for the mounting of the compression driver. The horn shall be 33.0 cm (13.0 in.) high, 71.1 cm (28.0 in.) wide and 43.7 cm (17.2 in.) long. It shall weigh no more than 4.3 kg (9.5 lb). The horn shall be the Electro-Voice HP640 constant-directivity horn.