Architect's & Engineer's Specifications

The compact passive column array loudspeaker shall consist of four 3 inch (76 mm) full-range Neodymium transducers with 0.75 inch (20 mm) voice coil. Performance specifications of a typical production unit shall be: Measured sensitivity SPL at 1 m (3.3ft) with 2.83V input, shall be 93 dB-SPL. Usable frequency response shall extend from 150 Hz to 20 kHz (10 dB below rated sensitivity, in full space, with no external equalization). Nominal impedance shall be 8 Ohms. Rated power capacity shall be at least 120 Watts continuous power and 480 Watts peak power, defined as 6 dB above a test signal of filtered random noise. The system shall be capable of even coverage at a nominal 90° horizontal through 25° vertical distributed pattern. The enclosure shall be constructed from prime-grade 12 mm plywood. The loudspeaker shall be equipped with a total of seven (7) suspension points. The grille shall be of heavy-duty steel backed with acoustically transparent foam. The external wiring shall be via either two 4-pin twist-lock or one 4-pin Euroblock connectors. The loudspeaker shall be 17.52 inches (445 mm) high by 4.72 inches (121 mm) wide by 4.98 inches (126.5 mm) deep weighing 6 pounds (2.7 kg). The finish shall be a paintable lightly textured black or white. The compact column array loudspeaker shall be the Crest Audio CPL 4L+ or approved equivalent.