User manual ALTEC LANSING DE9412-8A SPEAKER SYSTEM

[. . . ] The DE9412-8A features Altec's unique 12" Duplex® point-source speaker component. This Duplex® "Engine" uses a single magnet structure, with the high frequency diaphragm on the back of the magnet and the low frequency voice coil and cone on the front of the structure. [. . . ] Wilshire Blvd. , Suite 362 · Oklahoma City, Oklahoma 73116 · Phone: 1-405-848-3108 · Fax: 1-405-848-3217 · www. altecpro. com ARCHITECTS & ENGINEERS SPECIFICATION The loudspeaker system shall be a two-way multi-purpose type consisting of a 12 inch / 300mm Duplex® point-source loudspeaker component featuring a 12" / 300mm low frequency speaker combined in a single magnet structure with a large format 1. 4" exit throat high frequency compression driver mated to a 90° x 40° MantarayTM high frequency horn. The crossover network shall be a dual-section, 12 dB / octave slope low pass and 12 dB / octave slope high pass with an electro-acoustic crossover frequency of 1, 000 Hz, switchable for bi-amp operation. The loudspeaker system shall have an operating bandwidth of 110 Hz - 15 kHz with a sensitivity of 102 dB when measured at a distance of one meter. 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. 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 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. 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. [. . . ] Use only the correct mating hardware, forged shoulder machinery eye bolt, Mil Spec MIL 51937-3. All associated rigging is the responsibility of others. VISIT WWW. ALTECPRO. COM FOR · Authorized EASE® data on Altec Lansing Professional speakers. [. . . ]