User manual ELECTRO-VOICE SX500PI+ EDS

[. . . ] S x 500PI+ 400-Watt Two-Way Weather-Resistant Speaker System · Ring-Mode Decoupling (RMDTM) Technology for increased intelligibility · Black powder - coated, full-face stainless steel grille with foam backing and a polyester mesh water shield. · Durable structural-foam enclosure with integral handles, stand mount and molded-in attachment points for secure suspension with optional brackets · DL15Sx-W 15-inch woofer and DH2T compression driver for great sound and reliable performance · Asymmetric constant-directivity 75° x 60° high-frequency horn · Asymmetric horn-loaded woofer section · 400-watt long-term rms power capacity · Passive network with biamp capability Description The Electro-Voice Sx500PI+ is a weather-resistant version of the popular Sx500+ loudspeaker. It is a 400-watt, 15-inch two-way, biampable, high-efficiency, constant-directivity speaker system featuring a vented-horn woofer section. The weather-resistant features are the specially treated woofer, the DL15Sx-W, and the full-face stainless-steel grille backed with both foam and a polyester mesh water shield. [. . . ] In biamp mode, 1+, 1­ are the LF inputs and 2+, 2­ are the HF inputs. Constant-Directivity Speaker System The crossover frequency and speaker- component geometries have been selected so that the directional characteristics of the woofer and constant-directivity high-frequency horn match at the crossover frequency to create a special system type -- the constant-directivity system. At higher frequencies, the horizontal coverage pattern remains constant and the vertical pattern smoothly transitions to a 60° angle above 5, 000 Hz. Response within the 75° x 60° rated coverage angle is uniform, which means dependable audience coverage without "hot spots" or dead zones at certain frequencies. The 75° x 60° dispersion characteristic also helps avoid early reflections from nearby floor or side-wall surfaces which could degrade performance. The controlled directivity of the highand low-frequency transducers also eliminates response irregularities caused by diffraction off nearby enclosure edges and, in combination with an essentially flat on-axis frequency response, produces a total acoustic power output that is uniform with frequency. Directivity A unique feature of the Sx500PI+ is the constant-directivity dispersion provided by the 75° x 60° horn. The polar response of the system at selected one-third-octave bandwidths is shown in Figure 2. These polar responses were measured in an anechoic environment at 6. 1 meters (20 feet) using one-third-octave pinknoise inputs. The frequencies selected are fully representative of the polar response of the system. Beamwidth of the system utilizing the complete one-third-octave polar data is shown in Figure 3. Directivity factor, R , and directivity index, Di, are plotted in Figure 4. Power-Handling Capacity The Sx500PI+ is shipped in full-range mode using an internal crossover. In biamp mode, the long-term average power-handling capacity is as follows: Low Frequency: 400 watts High Frequency: 60 watts Electro-Voice components and systems are manufactured to exacting standards, ensuring they will hold up, not only through the most rigorous of power tests, but also through continued use in arduous, real-life conditions. The EIA Loudspeaker Power Rating Full Range (ANSI/EIA RS-426-A 1980) uses a noise spectrum which mimics typical music and tests the thermal and mechanical capabilities of the components. Electro-Voice will support relevant additional standards as and when they become available. Extreme, in-house power tests, which push the performance boundaries of the woofers, are also performed and passed to ensure years of trouble-free service. Specifically, the Sx500PI+ passes ANSI/EIA RS-426-A 1980 with the following values: R = 5. 76 ohms (1. 15 x (RE + 1. 86)) RE = woofer DCR 1. 86 =horn-load impedance correction PE(MAX) = 400 watts Test voltage = 48. 00 volts rms, 96. 00 volts peak (+6 dB) The "peak" power-handling capacity of a woofer is determined by the peak test-voltage amount. For the Sx500PI+, a 96. 00-volt peak test-voltage translates into 1, 600-watts shortterm peak power-handling capacity. This is the equivalent of four times the "average" powerhandling capacity, and is a peak that can be sustained for only a few milliseconds. However, this sort of short duration peak is very typical in speech and music. Provided the amplifier can reproduce the signal accurately without clipping, the woofer will also perform accurately and reliably, even at these levels. [. . . ] The loudspeaker shall meet the following performance criteria: frequency response of 66-16, 000 Hz, ­3 dB; power handling of 400-watts long term and 1, 600-watts short term, with a shaped randomnoise input per ANSI/EIA RS-426-A 1980; sensitivity of 100-dB SPL at 1 meter with a 1watt, 300-2, 000-Hz pink-noise input; 6dBdown horizontal coverage angle of 75° + 14°/ ­ 20° in the 2, 000- to 16, 000-Hz range; 6-dBdown vertical coverage angle of 60° +11°/ ­ 8° in the 2, 000- to 16, 000-Hz range; crossover frequency of 1, 600 Hz; nominal impedance of 8 ohms and minimum impedance of 5. 2 ohms in full-range mode. Paralleled input and output connectors shall be present, consisting of Neutrik Speakon® NL4MP connectors. The enclosure shall be constructed of polypropylene structural foam and fitted with a powder-coated full-face stainless-steel grille with foam backing and a polyester mesh water shield, three integral handles, a stand socket for mounting on 1 3/8 -inch stands, rubber feet and mating sockets to facilitate stacking. Dimensions shall be 838 mm (33 in. ) high x 673 mm (26. 5 in. ) wide x 448 mm (17. 63 in. ) deep. [. . . ]