Assessments - 3, GPA: 4.3
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Facilidade de uso
High Output Capability III Maximum Output: 133 dB SPL. High Sensitivity III High Frequency: 109 dB SPL. Ill Low Frequency: 104 dB SPL. Extensive Power Handling III High Frequency: 300 watts. Ill Low Frequency: 800 watts. Excellent Directivity Control III 60° Horizontal by 40° Vertical. True Point Source III Smooth Transition. Multiple Arraying Configurations III Flexible Trapezoidal Cabinet Design. Safety Tested Flying System III 552 lb. Capacity (in excess of 8:1 S.F.) DESCRIPTION The permanent installation of compact, "packaged" loudspeakers in architectural spaces has grown increasingly popular in recent years. Sound system designers sparked this popularity through their increased creation of high output, concert quality loudspeaker systems. These systems provide a level of quality desired by the performing arts and touring sound industries. The introduction of trapezoidal enclosures enable sound system designers to locate more loudspeakers in a smaller physical space, thereby increasing output and creating an effective "point source" cluster. While most of these systems reproduce amplified music with the intensity and wide bandwidth suitable for concert quality reproduction, they typically lack the directivity to provide highly intelligible, natural sounding speech with adequate gain-before-feedback. This compromise is completely unacceptable in a performing arts center or house of worship. The Altec Lansing DTS645-8AF loudspeaker was created to provide high output levels for full-range music reproduction while offering a very directive output for highly intelligible speech in even the most reverberant architectural spaces. Altec Lansing's engineers have created a new Duplex® coaxial loudspeaker which physically aligns the high and low frequency drivers creating a true point source device. This concept is the driving force behind the DTS-series of arrayable loudspeaker devices. Complementing the DTS645-8AFs powerful performance is a trapezoidal cabinet which allows for flexible arraying. The integral L-track flying hardware facilitates quick, easy, and repeatable installations. DTS645-8AF SPECIFICATIONS (unprocessed) System Type: Vented bass horn type, two-way full-range loudspeaker system. Pressure Sensitivity: (see note 1) H.F.: 109 dB SPL (1 wait, 1 kHz to 10 kHz, re: 20 uPa). L.F.: 104 dB SPL (1 watt, 125 Hz to 1 kHz, re: 20 uPa). Frequency Response: (see note 2) Useable: 50 Hz - 18 kHz. Power Handling: (see note 3) H.F. (1 kH7 lo 10 kHz): 300 watts, peak power. 150 walls, conlinuous program. 75 walls, AES method. L.F. (50 Hz to -4 kHz): 800 watts, peak power. 400 walls, continuous program. 200 walls, AES method. Maximum Output: (see note 4) H.F.: 134 dB SPL, peak power. 131 dB SPL, continuous program. 128 dB SPL, AES method. L.F.: 133 dB SPL, peak power. 130 dB SPL, continuous program. 127 dB SPL, AES method. Crossover Frequency: 1 kHz recommended. Impedance: H.F.: 8.0 ohms minimum. L.F.: 7.0 ohms minimum. 8.0 ohms nominal. Components: 16 inch, high-efficiency, Duplex' loudspeaker. Input Terminals: Large screw terminals, Speakon connector. Flying System: L-track accepts Aeroquip 32102 fittings. Accessory Hardware: Grid Strap Part # GS-1A, 10" Linkstrap Pari # LS-1A, 12" Linkstrap Part # LS-2A. Suspension Data: To insure a proper safety factor, Allec Lansing recommends the units not be stacked over four (4) high. Recone Kit: R9864-8ALF. Diaphragm Replacement: 25884. Replacement Grille: Model RG039105. Enclosure: Vented bass horn type, built of 14-ply birch plywood with appropriate bracing. Lined with glass wool. Finish: Black texture paint with black metal grille. Dimensions: Height: 24.53 inches (62.31 centimeters). Width: 26.67 inches (67.74 centimeters). Depth: 25.0 inches (63.5 centimeters). MEASUREMENT NOTES 1. Pink noise signal, one Wait calculated using E2/Zmin, 3.16 meter-measurement distance referred to one meter. 2. On-axis, one Watt calculated using E2/Zmin, 3.16 meter-measure-ment distance referred to one meter, low frequencies corrected for anechoic chamber error. 3. This system rating patterned after the AES method for individual driver, where the test signal is pink noise with a 6 dB crest factor over the bandwidth of the system, with power calculated using the E2/Zmin, for Iwo hours. 4. This measurement made under the same conditions as Pressure Sensitivity, but at rated power, and takes into account any power compression effects due to non-linearities in the system. Distortion components invalid above 10 kHz. The distortion at any given frequency may be found by graphically taking the difference between the fundamental and harmonic, and adding the number of Decibels which the harmonic has been raised on the graph and apply the formula: % distortion = 100 x io1*’“"“*-/* Weight: Net: Shipping: 138.0 pounds (62.60 kilograms). 178.0 pounds (80.74 kilograms). 24.53 in. (62.31 cm) 25.0 in. (63.5 cm) 18.22 in. (46.28 cm) 11.1...