User manual ELECTRO-VOICE DS30 DATASHEET

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ELECTRO-VOICE DS30 DATASHEET: Download the complete user guide (491 Ko)

Manual abstract: user guide ELECTRO-VOICE DS30DATASHEET

Detailed instructions for use are in the User's Guide.

[. . . ] The axial frequency response will extend from 260-10, 000 Hz and the horn shall exhibit a low-frequency cutoff of 200 Hz. Sound pressure level will be 105 dB (1 W/1 M) with a 500-5, 000-Hz pink noise signal applied, and the horn will produce a horizontal beamwidth of 150° and a vertical beamwidth of 110° at 2 kHz. The horizontal coverage shall be constant over the frequency range of 3 kHz to 10 kHz. [. . . ] Other major external speaker parts shall be die-cast zinc and finished in gray polyester paint to match the molded horn parts. All components shall be resistant to damage from weather, moisture and fungus. A steel swivel bracket capable of providing either vertical or horizontal installation and a variety of adjustments, is provided. The loudspeaker shall be 52. 0 cm (20. 5 in. ) high, 26. 5 cm (10. 5 in. ) wide and 54. 6 cm (21. 5 in. ) long. The loudspeaker shall be the 848AT, which includes a 70V/25V transformer and weighs no more than 7. 0 kg (15. 5 lb). Specifications: Frequency Response: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260-10, 000 Hz ±5 dB (see Figure 3) Power Handling, 8 Hours, 6 dB Crest Factor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 watts (500-5, 000 Hz pink noise) Transformer Taps and Impedances: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Table 1 Sound Pressure Level at 1 Meter 1 Watt Input Averaged, Pink Noise Band-Limited from 500-5, 000 Hz: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. These axes of rotation are quite close to the apparent (acoustic) apexes across the frequency range of measurement. Errors attributable to the slight differences between the geometric and acoustic apexes are reduced to an inconsequential level by the relatively long, 20-foot measuring distance. The wider plot on each chart is the horizontal polar (-) and the narrower plot is the vertical polar (---). Transformer A transformer is installed in the driver housing. Power taps for the transformer are listed in Table 1. Low-Frequency Driver Protection When frequencies below the low-frequency cutoff for the horn assembly are fed to the driver, excessive current may be drawn by the driver. For protection of the driver, amplifier and transformer, capacitor(s) in series with driver or transformer primary is recommended. [. . . ] Values for other frequencies can be determined by using the formula: C200 = Values shown in the following table C200 x 200 C= f f = New Frequency [ ] Table 1. Power 30 W 15 W 8W 4W 2W 1W 1/2 W 166 333 625 1250 70-Volt Lines Impedance Capacitance 5 mf 2 mf 1 mf 0. 5 mf 156 312 625 1250 70-Volt Lines Impedance Capacitance 5 mf 2 mf 1 mf . 5 mf Figure 2 848AT Beamwidth vs. Frequency Figure 1 848AT Polar Response Figure 3 848AT Frequency Response (1 watt at 1 meter) USA Canada Switzerland Germany France Australia Hong Kong Japan Singapore Mexico UK Africa, Mid-East Latin America 12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043 705 Progress Avenue, Unit 46, Scarborough, Ontario, Canada, M1H2X1, Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588 Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 41/32-331-6833. [. . . ]

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