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Manual abstract: user guide ELECTRO-VOICE HP64DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] HP64
General Product Description
The Electro-Voice® model HP64 is a wide-range, flat-front, high-frequency, constant-directivity horn. [. . . ] The horn shall possess a throat of 4. 92-cm (1. 94in. ) diameter and its flange shall be provided with four ¼20 clearance bolt holes on a 10. 2 cm (4. 0 in. ) circle for the mounting of the compression driver. The horn shall be 27. 9 cm (11. 0 in. ) high, 22. 2 cm (8. 8 in. ) wide, and 22. 2 cm (8. 7 in. ) long. It shall weigh no more than 2. 5 kg (4. 5 lb). The horn shall be the Electro-Voice model HP64 constant-directivity horn.
Specifications:
The following specifications are in accordance with or exceed the AES Recommended Practice for Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforcement (AES2-1984; ANSI S4. 26-1984).
Horizontal Beamwidth: Construction:
Polyester resin and glass-fiber laminate integrally molded to a die-cast zinc throat section. This hybrid construction assures a rigid driver mount, accurate, loss-free throat-wave transmission and low total weight compared to horns of similar size.
Mechanical Connection of Driver:
60° (+30°, -10°) (-6 dB 1. 7 kHz to 20 kHz)
Vertical Beamwidth:
40° (+20°, -10°) (-6 dB, 1. 8 kHz to 20 kHz)
Directivity Factor R (Q):
Bolt on; standard 2" diameter throat, 5" diameter mounting flange and four clearance holes for 1/4" bolts on a 4" diameter bolt circle. (See Figure 1).
Recommended Driver:
18. 1 (average 1. 6 kHz to 20 kHz)
Directivity Index Di:
DH1A, DH2A
Weight:
12. 6 dB (+0. 9, -2. 9 dB) 10 log R, (average 1. 6 kHz to 20 kHz)
Lowest Recommended Crossover Frequency:
2. 5 kg (4. 5 lb)
1000 Hz
Dimensions: A B C D E F G H
Inches 1. 938 5. 00 8. 75 11. 00 4. 00 0. 281 x 4 8. 68 8. 49
Figure 1: Dimensions
Directivity
Beamwidth
The axial directivity factor R (formerly Q) of the HP64 horn was computed at each one-third-octave center frequency from the horizontal/vertical polars. The graph in Figure 2 illustrates this data over the range 630 Hz to 20 kHz. The axial frequency response of the HP64 with a particular driver is in close correspondence to that driver's power response above 1. 8 kHz.
A plot of the HP64's 6-dB-down total included beamwidth angle is shown in Figure 3 for each one-third-octave center frequency. [. . . ] Specifications subject to change without notice. [. . . ]
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