User manual ELECTRO-VOICE 848AT DATASHEET

[. . . ] The 150° horizontal by 110° vertical dispersion pattern is beneficial in many applications requiring a wide coverage pattern. Furthermore, excellent loading is maintained to a low-frequency cutoff of 200 Hz. Compound Diffraction Projector COMMERCIAL Architects' and Engineers' Specifications The loudspeaker shall be of the integrated driver and horn style, utilizing two coaxial horns coupled to opposite sides of the driver diaphragm and a larger horn compression molded from fiberglass, a zinc die-cast front horn with phenolic-constructed inner horns. [. . . ] 3. 81 cm (1 . 5 in. ) Magnet Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 28 kg (0. 62 lb) Magnet Material: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strontium ferrite Flux Density: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 25 T Dimensions, Height: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 cm (20. 5 in. ) Width: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26. 5 cm (10. 5 in. ) Depth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 cm (20. 0 in. ) Net Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7. 0 kg (16. 0 lb) Shipping Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8. 2 kg (18. 0 lb) Installation As shipped, the "U" bracket is in position for vertical mounting. For horizontal dispersion, (or for mounts where the bracket mounting holes must be vertical), move bracket to the rear mounting position. The horn can be mounted in a variety of horizontal and vertical configurations by using adjustments of the swivel connections (bracket to horn). Beamwidth A plot of the 848AT 6 dB-down total included beamwidth angle is shown in Figure 2 for each one-third-octave center frequency. Frequency Response Figure 3 shows the axial frequency response of the 848AT. It was measured at a distance of 1 meter, using a swept sine wave. Polar Response The directional characteristics of the 848AT, with driver attached, were measured by running a set of horizontal/vertical polar responses in a large anechoic chamber at each one-third-octave center frequency. The test signal was one-third-octave, pseudo-random pink noise centered at the indicated frequencies. The measurement microphone was placed 6. 1 m (20 ft) from the horn mouth, while rotation was about the waveguide geometric apexes. [. . . ] 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212 www. electrovoice. com · Telex Communications, Inc. · www. telex. com © Telex Communications, Inc. [. . . ]