User manual ALTEC LANSING DE6412-8A SPEAKER SYSTEM

[. . . ] The result of the proximity of the voice coils is a point-source alignment. Altec Lansing's use of this point-source Duplex®, or coaxial, design maximizes speech intelligibility by minimizing the interference from adjacent devices that so often occurs in traditional two-way speaker systems. [. . . ] (W rear) 689 mm (H) x 613 mm (W) x 664 mm (D) x 257 mm (W rear) Shipping 34. 75 in (H) x 33. 00 in (W) x 33. 00 in (D) x 15. 75 in (W rear) 883 mm (H) x 838 mm (W) x 838 mm (D) x 400 mm (W rear) WEIGHT Net Shipping 114 lbs. 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 950 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 60 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 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. 2 The limits of the frequency response are referenced to -3 dB of the systems rated sensitivity. [. . . ] 9 Before attempting to suspend the loudspeaker system, consult a certified structural engineer. This loudspeaker system can fall from improper suspension, resulting in serious injury and property damage. [. . . ]