User manual ELECTRO-VOICE DOMINATOR DATASHEET

[. . . ] A gland nut shall be provided for a weathertight seal and a Uni-Lok swivel mount for rotation in both the horizontal and vertical planes. The Uni-Lok shall fit standard 1/2-inch pipe thread. The loudspeakers shall be the CFID32T, which includes a 70 V/25 V line matching transformer and weighs no more than 2. 7 kg (5. 9 lb) and the CFID32-8, which has a nominal impedance of 8 ohms and weighs no more than 2. 5 kg (5. 6 lb). Specifications: Frequency Response: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 32 watts (500-5, 000 Hz pink noise) Impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ohms Sound Pressure Level at 1 Meter, 1 Watt Input Averaged, Pink Noise Band-Limited from 500 to 5, 000 Hz: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 dB Horizontal Beamwidth: 55° @ 2 kHz (see Figure 2) Vertical Beamwidth: 74° @ 2 kHz (see Figure 2) Directivity Factor R (Q): 16. 3 @ 2 kHz Usable Low-Frequency Limit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Hz Construction: Non-resonant Cycolac horn material and durable diecast mounting bracket. Voice-Coil Diameter: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. 81 cm (1. 5 in. ) Magnet Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 28 kg (0. 63 lb) Magnet Material: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strontium ferrite Flux Density: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 15 Tesla Dimensions: Height: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 horn was suspended freely with no baffle. The polar plots shown in Figure 1 display the results of these tests. The center frequency is noted on 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 driver, amplifier, and transformer (if driver with built-in transformer is used), capacitor(s) in series with driver, or transformer primary are recommended. Table 1 (below) indicates recommended values. [. . . ] Table 1 (below) indicates recommended values. Values for other frequencies can be determined by using the formula: C= [ . C200 x 200 f ] C200 = Values shown in the following table f = New Frequency Table 1. Series Protection Capacitors for 200 Hz and Below 70-Volt Lines Impedance 161 335 500 1000 2000 4000 Capacitance 5 mf 2 mf 1. 3 mf 0. 7 mf 0. 4 mf 0. 2 mf 20 42 63 125 250 500 25-Volt Lines Impedance Capacitance 40 mf 20 mf 13 mf 7 mf 4 mf 2 mf Power 32 W 15 W 10 W 5W 2. 5 W 1. 25 W Figure 2 CFID32 Beamwidth vs. [. . . ]