User manual ELECTRO-VOICE HP1240 DATASHEET
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Manual abstract: user guide ELECTRO-VOICE HP1240DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] HP1240
General Product Description
The Electro-Voice® model HP1240 is a wide-range, flat-front, high-frequency, constant directivity horn. [. . . ] The driver-mounting flange and initial throat section shall be constructed of die-cast zinc and shall be integrally laminated into the fiberglass portion of the horn. The horn shall possess a throat of 4. 92-cm (1. 94in. ) diameter and its flange shall be provided with four ¼-20 clearance bolt holes 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, 53. 3 cm (21. 0 in. ) wide, and 26. 4 cm (10. 4 in. ) long. The horn shall be the Electro-Voice® model HP1240 constant-directivity horn.
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).
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:
120° (+20°, -40°) (-6 dB 500 Hz to 20 kHz)
40° (+20°, -10°) (-6 dB, 1. 5 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.
8. 4 (average 1. 25 kHz to 20 kHz)
Directivity Index Di:
DH1A or DH2A
9. 24 dB (+1. 2, -. 9 dB) 10 log R, (average 1. 25 kHz to 20 kHz)
Lowest Recommended Crossover Frequency:
3. 2 kg (7. 0 lb)
Dimensions: A B C D E F G H
Inches 1. 938 5. 00 13. 00 21. 00 4. 00 0. 281 x 4 10. 44 10. 19
Figure 1: Dimensions
The axial directivity factor R (formerly Q) of the HP1240 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 500 Hz to 20 kHz. [. . . ] For customer orders, contact the Customer Service department at 800/392-3497 Fax: 800/955-6831 For warranty repair or service information, contact the Service Repair department at 800/685-2606 For technical assistance, contact Technical Support at 866/78AUDIO Please refer to the Engineering Data Sheet for warranty information. [. . . ]
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