Architect's & Engineer's Specifications

The loudspeaker shall consist of a 15 inch (381 mm) low frequency transducer with 3 inch (76 mm) voice coil and one 1 inch (25.4 mm) exit Neodymium compression driver with a 1.7 inch (44 mm) voice coil and a frequency dividing network installed within the enclosure. Performance specifications of a typical production unit shall be: Measured sensitivity SPL at 1 m (3.3ft) with 2.83V input, shall be 97 dB-SPL. Usable frequency response shall extend from 47 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 500 Watts continuous power and 2,000 Watts peak power, defined as 6 dB above a test signal of filtered random noise. The system shall be protected against damage from occasional over-powering limiting the power to the network and transducers. The compression driver shall be capable of even coverage at a nominal 90° horizontal through 60° vertical distributed pattern. The horn shall be rotatable. The enclosure shall be constructed from prime-grade 18 mm plywood. The loudspeaker shall be equipped with a total of sixteen (16) 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 27.36 inches (695 mm) high by 17.36 inches (441 mm) wide by 17.52 inches (445 mm) deep weighing 67.2 pounds (30.5 kg). The finish shall be a paintable lightly textured black or white. The loudspeaker shall be the Crest Audio CPL 15+ or approved equivalent.