User manual ALTEC LANSING DE9412-8A SPEAKER SYSTEM
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Manual abstract: user guide ALTEC LANSING DE9412-8A SPEAKER SYSTEM
Detailed instructions for use are in the User's Guide.
[. . . ] The use of a bass horn cabinet insures that much of the low frequency energy is kept off the performance area, even when the speakers are flown overhead. The DE9412-8A "Engine" is built around Altec's large format 1. 4" exit throat high frequency compression driver, using a 2. 8" PascaliteTM aluminum alloy diaphragm. [. . . ] Nominal impedance shall be 8. 0 ohms with a minimum impedance of 6. 6 ohms at 140 Hz. The loudspeaker shall have nominal coverage angles of 90 degrees in the horizontal plane and 40 degrees in the vertical plane. The paintable cabinet shall be a Sealed Mid-Bass Horn, constructed of 18 mm Birch plywood painted grey or white with a cloth covered metal grille. The cabinet shall include integral suspension points. Forged shoulder machinery eye bolts shall be included to facilitate the suspension of the speaker system. The dimensions shall be 27. 13 inches (689 mm) high by 24. 13 inches (613 mm) wide by 26. 13 inches (664 mm) deep. The loudspeaker system shall weigh 97 pounds (44. 1 kg). The loudspeaker system shall be the Altec Lansing Professional model DE9412-8A.
ONE-THIRD OCTAVE POLAR RESPONSE CHARTS 6 dB / DIVISION
Horizontal
Vertical
As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice. Please visit www. altecpro. com for the lastest information on Altec Lansing Professional products.
MOUNTING DIMENSIONS
26. 10 [663. 05] 16. 19 [411. 26] 1. 71 [43. 40] 10. 23 [259. 78] 13. 54 [343. 83]
27. 09 [688. 00]
6. 65 [169. 00]
12. 73 [323. 28]
10. 10 [256. 65] 5. 05 [128. 33] 1. 71 [43. 40]
26. 10 [663. 00] 16. 64 [422. 71]
DENOTES CENTER OF MASS 7. 56 [192. 14] DIMENSIONS ARE IN INCHES. DIMENSIONS SHOWN IN ( ) PARENTHESES ARE IN MILLIMETERS. 11. 87
15
12. 73 [323. 28]
24. 10 [612. 10]
SPECIFICATION NOTES
1 The frequency response of the loudspeaker system is measured at a distance of no less than 3 meters to obtain full range data. The level is then corrected to be equivalent to a 2. 83 V 1 m measurement. A near field measurement of the loudspeaker system is performed for frequencies below 500 Hz. This data is then combined with the full range measurement to give an accurate composite frequency response curve. [. . . ] Maximum enclosure rigging angle is 45°. Use only the correct mating hardware, forged shoulder machinery eye bolt, Mil Spec MIL 51937-3. [. . . ]
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