User manual ELECTRO-VOICE 912 DATASHEET

[. . . ] X-ArrayTM Xi-SeriesTM: High intelligibility in reverberant spaces through extended-frequency directivity control. The Xi-SeriesTM described in this brochure adds models particularly appropriate for high-performance fixed installations. Included are two- and three-element line-array configurations, which increase intelligibility and clarity in reverberant spaces through extended-frequency directivity control. Suspension hardware and magnetics are optimized for permanent installation or portable applications of small-to-medium size. [. . . ] (See page 7 for more Merlin® details. ) The tripole effect is quite dramatic in reverberant spaces. A-B comparisons have been made between high-quality systems with similar frequency response but directivity control to only 2, 500 Hz. When switching to the tripole, the listeners' ears were drawn much more strongly to the loudspeaker as the source. The room seemed to partly "disappear, " and both vocal clarity and musical impact were substantially increased. below an array is nonexistent or minimal, dipole and tripole configurations are less necessary, and the additional low-frequency output of the EVX-180B 18-inch woofer may be utilized. Typical application examples include well damped rooms and club environments. The EVX-180B extends lowfrequency response to 45 Hz, and its additional cone area and higher excursion ability more than quadruples the lowfrequency acoustic output (+6. 3 dB). The Xi-1183/64F features one EVX-180B; the Xi-2183/64F exployes two. Xi-1153/64F: three-way, 15-inch 60° x 40° full-range system, dipole configurable When extended-frequency vertical directivity control is desired but vertical clearance is limited, the Xi-1153/64F could be the answer. At 36 inches rather than 48 inches high, the Xi-1153/64F has one EVX-155 15-inch woofer adjacent to the MB horn. With the Merlin® ISP-100 providing MB/LF overlap in the 125- to 540-Hz range, vertical directivity is controlled to 300 Hz. The Xi-1153/64F may also be conventionally crossed over at 125 Hz and 1, 760 Hz, with decreased directivity control below 800 Hz. Xi-2153/64F: three-way, dual-15-inch 60° x 40° full-range system, tripole configurable Much of the mid and lower vocal frequency range is often unwittingly aimed primarily at highly reflective room surfaces rather than the absorptive audience. This action provides much more reliable protection than is possible in the analog domain. In addition, Merlin® sets the limiting threshold in inverse relation to excursion-versusfrequency capabilities of the loudspeaker components. For example, at the low end of the compression driver operating range, where diaphragm excursions are inherently larger, Merlin® limits sooner than at higher frequencies. The end result is near-absolute protection against over-excursion with the very minimum audible side effects. Only Merlin® provides excursion-smart protection. Xi-1152/64F and Xi-1152/94F: Very high output for small spaces, two-way, 15-inch 60° x 40° and 90° x 40° mid- and short-throw full-range systems Only slightly larger and heavier than the ultracompact Xi-1122, the Xi-1152 utilizes an EVX-155 four-inch-coil woofer for prodigious output to 50 Hz. HF horns rotate for coverage independent of enclosure orientation. Integral carrying handles and stand-mount adapter, in addition to the L-track top and bottom rigging, facilitate a wide range of portable and fixed applications. Xi-1122/85F: Ultracompact two-way, 12-inch 80° x 55° short-throw full-range system In an ultracompact package, the Xi-1122/85F features a DL12type woofer with RMDTM and the same large-format DH6 compression driver used in the most advanced Xi-SeriesTM systems. The Xi-1122/85F brings the spectacular quality of X-ArrayTM to applications where space is at a premium and/or light weight is required, with full-range performance to 60 Hz. The single eight-inch woofer (with RMDTM) avoids the midband lobing characteristic of the dual, spaced woofers used in conventional underbalcony systems. Four inserts on the back of the enclosure fit OmniMount® Series 100 mounting ware. * *OmniMount is a registered trademark of OmniMount Systems, Inc. Xi-2122/42F: Two-way, 40° x 20° dual-12-inch horn-loaded MB/HF system The Xi-2122/42F's 40° x 20° coverage pattern adds long-throw "punch" to the capabilities of the medium-throw 60° x 40° Xi-SeriesTM systems. Its physical shell is identical to that of the Xi-1153/64 and Xi-1183/64, with its footprint matching that of the taller Xi-2153/64 and Xi-2183/64. [. . . ] Systems shown without grille. Merlin®: Performance, flexibility, simplicity Merlin® ISP-100 is a truly flexible, fully configurable digital control system that manages the crossover, voicing (equalization), signal alignment, directivity control and protection of X-Array Xi-SeriesTM speaker systems. It is easy to configure and install, and intuitive to use. Available with 24-bit input and output modules, parameter algorithms were developed and "tweaked" by engineers who are serious music listeners. Merlin® ISP-100 delivers sound quality in the digital domain that is truly exceptional. Modular inputs and outputs ­ two channels to a module ­ allow the purchase of just the amount of processing required. [. . . ]