User manual ELECTRO-VOICE SX80TB EDS

[. . . ] Constructed of highimpact polystyrene it provides a stiff and extremely durable enclosure. The cabinet includes M6 threaded inserts for the optional Sx80MB U-bracket. It also has inserts for installing with an OmniMount® Series 75 mounting system. The Sx80T's high-frequency horn is driven by the DH2005 one-inch throat, wide-bandwidth, titanium-diaphragm driver. [. . . ] 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 Sx80T passes ANSI/EIA RS-426-A 1980 with the following values: RSR = 6. 21 ohms (1. 15 x RE) RE = woofer DCR = 5. 4 PE(MAX) = 175 watts Test voltage = 32. 97 volts rms, 65. 93 volts peak (+6dB) The "peak" power-handling capacity of a woofer is determined by the peak test voltage amount. For the Sx80T, a 65. 93-volt peak test voltage translates into 700-watts short-term peak power-handling capacity. This is the equivalent of four times the "average" power-handling 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. Service In the unlikely event the Sx80T requires service, the woofer can be removed from the front. The high-frequency driver can be removed by separating the front and the rear halves of the enclosure and removing the bolt that attaches the driver to the rear. A service data sheet is available from Electro-Voice. Sx80T Two-Way Speaker System With Transformer Enclosure Construction The Sx80T enclosure is contructed of verydurable High-impact polystyrene that is hard to dent, scratch, or break. This enclosure allows for molded in attachment points for the optional Sx80MB mounting bracket or for use with an OmniMount® Series 75 mounting system. The enclosure is paintable to match any decor. It is recommended, however, that a small area should be tested with the desired paint in order to ensure that there are no adverse effects and that the paint has sufficient adhesion. Care should be taken not to get paint onto the woofer cone or into the horn throat. Frequency Response The combination of a 203-mm (8-inch) woofer, a wide-bandwidth high-frequency driver and an equalized crossover results in the wide and smooth overall response shown in Figure 1. This response was measured at 1 meter (3. 281 feet), using a 2. 83-volt swept sine-wave input in a full-space anechoic chamber using the internal passive crossover. Figure 1 also shows the half-space measurement of the Sx80T loudspeaker. This curve gives an indication of how the system will respond when mounted on a wall, which is a likely application. This response was also measured at 1 meter (3. 281 feet), using a 2. 83-volt swept sine-wave input using the internal passive crossover. Connections The Sx80T is equipped with barrier strip connectors with a cover. Care should be taken to ensure that the correct polarity is observed when connecting the Sx80T. The barrier strip is marked with + for positive and - for negative. Constant-Directivity Speaker System The crossover frequency and speaker component geometries have been selected so that the directional characteristics of the woofer Suspending Sx80T Enclosures WARNING: Suspending any object is potentially dangerous and should be attempted only by individuals who have a thorough knowledge of the techniques and regulations of rigging objects overhead. [. . . ] Electro-Voice active electronics associated with the speaker systems are guaranteed for three (3) years from the date of original purchase. Additional details are included in the Uniform Limited Warranty statement. Electro-Voice Electronics are guaranteed against malfunction due to defects in materials or workmanship for a period of three (3) years from the date of original purchase. Additional details are included in the Uniform Limited Warranty statement. [. . . ]