Electro-Voice EVI-28 دليل المستخدم

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EVI-28
250-Watt Two-Way
®
Compact Vari Intense
Speaker System
• Ground-breaking advance in single-
box utility
®
• New small-format Vari Intense horn
for consistant SPL throughout the
room
• DH2010A titanium compression driver
• Dual 8-inch high-power woofers with
amplitude, frequency and delay
shading
• 1400-watt peak, 250-watt long-term
power capacity
• Secure terminal strip inputs
• Compact, lightweight, refinishable,
easy-to-install enclosure with
U-bracket option
horn driven by the DH2010A

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System responses were measured in an anechoic tic Lens Filter (ALF) on the grille helps to the cabinet, you can actually stand right in environment at 20 feet using one-third-oc- eliminate spurious lobes and provides a front of the speaker (see Figure 10) with- tave pink-noise inputs at 2 degree resolu- degree of acoustic loading. These features out ear strain or microphone feedback. The tion (over 870,000 data points). The fre- heavily m

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System ® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System term average level stresses the speaker propriate power amplifier output rating. vent low-frequency signal below band- thermally (heat). The instantaneous peaks pass from going to the loudspeaker. When 1. To use the EVI-28 to full capacity, test mechanical reliability (cone and dia- using and active crossover, a high-pass skilled experts in sound-system instal- phragm exc

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System pended items be inspected at least once a structed of 12-mm (0.5-inch) 9-ply and Voice or any of its authorized service rep- year and any weakened or damaged parts 18-mm (0.71-inch) 13-ply birch plywood resentatives together with proof of pur- be replaced immediately. and shall be braced and lined with sound- chase of the product in the form of a bill of The recommended mounting method is the absorbent glass wool. The finish of the s

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System ® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System Figure 1 — EVI-28 Long-Throw Frequency Response (4 volts/10 feet normalized to 1 watt/ 1 meter, anechoic environment) HORIZONTAL 5 dB per division VERTICAL Figure 2 — Polar Response 5

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System Figure 3 — EVI-28 Impedance Figure 4 — EVI-28 Distortion at 0.1 Rated Power, 25W (anechoic environment) Figure 5 — EVI-28 Short-Throw Horizontal Beamwidth vs. Frequency (anechoic environment @ 20ft) 6 ® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System ® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System Figure 6 — EVI-28 Long-Throw Horizontal and Vertical Beamwidth vs. Frequency (anechoic environment @ 20ft) Figure 7 — EVI-28 Directivity vs. Frequency (anechoic environment @ 20ft) Figure 8 — EVI-28 Dimensions Figure 9 — Balcony Installation Figure 10 — Small-Room Installation 7

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® EVI-28 250-Watt Two-Way Compact Vari Intense Speaker System 1,000-20,000 Hz, Long-Throw Horizontal: High Pass: Specifications 65 degrees +/-20 degrees 12 dB per octave 600-20,000 Hz, Vertical: Impedance (see Figure 3): Axial Frequency Response, Swept Sine 65 degrees +/-20 degrees Nominal: Wave, 4 volts at 3.05 meters (10 feet), 8 ohms Directivity Factor, R (Q) 1,600 - 20,000 Hz anechoic environment, normalized for 1 θ Minimum: average (see Figure 7): watt at 1 meter; see Figure 1: 6.2 ohms (2