User manual ELECTRO-VOICE APX2 DATASHEET
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Manual abstract: user guide ELECTRO-VOICE APX2DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] A self-resetting high-frequency protection circuit, EV's PROTM circuit, is included with the Sx500+ to prevent against accidental overdrive and improve system reliability. If the input power to the high-frequency driver exceeds the nominal rating, the protection circuit is activated and reduces the power
delivered to the driver by 6 dB. The system will remain in this mode of operation until the input power is reduced to a safe level. The bass section of the Sx500+ is a ventedhorn design using Thiele-Small parameters for solid performance to 43 Hz. [. . . ] The user may put the system in biamp mode by removing the input panel and moving a connector from the full-range mode to biamp mode, as noted on the crossover. 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 high- and lowfrequency 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 Sx500+ 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 onethird-octave pink-noise inputs. The frequencies selected are fully representative of the polar response of the system. The bottom of the speaker should be no higher than 1. 52 m (5 ft) from the bottom of the stand. The user
must be sure that safe use on a stand is not affected by wind or any other conditions. The Sx500+ can be mounted on the 100BK speaker stand or any other stand with a 1 3/8-inch diameter shaft. Suspending Sx500+ 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 strongly recommends that the Sx500+ be suspended taking into account all current national, federal, state and local regulations. It is the responsibility of the installer to ensure the Sx500+ is safely installed in accordance with all such regulations. If the Sx500+ is suspended, Electro-Voice strongly recommends that the system be inspected at least once a year. If any sign of weakness or damage is detected, remedial action should be taken immediately. The Sx500+ enclosure contains eight M8 x 1. 25 inserts (see Figure 7) which are built into the enclosure for the purpose of suspension. Before the enclosure is suspended, these inserts are used to attach plates that hold the two halves of the enclosure together in addition to providing a way to suspend the enclosure. The suspension kits that are available for the Sx500+ are listed below. [. . . ] Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer are the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequential damages including, without limitation, injury to persons or property or loss of use. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. Other Rights: This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. [. . . ]
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