User manual ELECTRO-VOICE DOMINATOR DATASHEET

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Manual abstract: user guide ELECTRO-VOICE DOMINATORDATASHEET

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

[. . . ] Ideal for both indoor and outdoor applications, these drivers are well suited for any installation requiring rugged, reliable performance. Variable Power Paging/ Talk-Back Speaker COMMERCIAL Architects' and Engineers' Specifications The loudspeaker shall have a rectangular reflex horn with an exponential expansion rate. The driver employs a rugged phenolic diaphragm and high-temperature rated 3. 81 cm (1. 5 in. ) voice coil. The axial frequency response will extend from 330 to 4, 200 Hz and the horn shall exhibit a low-frequency cutoff of 300 Hz. [. . . ] Sound pressure level will be 107 dB (1 W/1 M) with a 500 to 5, 000 Hz pink noise signal applied, and the horn will produce a horizontal beamwidth of 55° and a vertical beamwidth of 74° at 2 kHz. The loudspeaker shall be capable of handling a 32-watt, 500 to 5, 000 Hz pink noise signal with a 6 dB crest factor for a period of eight hours. The horn shall be weatherproof Cycolac capable of satisfactory mechanical performance in extreme weather conditions with a field-replaceable plug-in diaphragm and voice coil assembly. 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 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: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330-4, 200 Hz ±5 dB (see Figure 3) Power Handling, 8 Hours, 6 dB Crest Factor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . It was measured at a distance of 1 meter, using a swept sine wave. Transformer A transformer and power selector switch are installed in the rear housing. The level of the CFID32T may be adjusted by moving the switch setting; clockwise increases the power. Polar Response The directional characteristics of the CFID32 were measured by running a set of horizontal/vertical polar responses, in Electro-Voice's 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 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. 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. [. . . ] 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. 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. [. . . ]

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