Architect's & Engineer's Specifications

The coaxial stage monitor loudspeaker shall consist of a 15 inch (381 mm) low frequency Neodymium transducer with 3 inch (76 mm) voice coil and one 1.4 inch (36 mm) Neodymium compression driver with 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 98 dB-SPL. Usable frequency response shall extend from 49 Hz to 17 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 stage monitor can either be operated in full-range or bi-amp mode. The coaxial Neodymium compression driver shall be capable of even coverage at a nominal 90° horizontal through 90° vertical distributed pattern. The enclosure shall be constructed from prime-grade 15 mm plywood. The grille shall be of heavy-duty steel backed with acoustically transparent foam. The external wiring shall be via three 4-pin twist-lock connectors. The loudspeaker shall be 13.31 inches (338 mm) high by 22.76 inches (578 mm) wide by 22.13 inches (562 mm) deep weighing 41.5 pounds (18.8 kg). The finish shall be a paintable lightly textured black or white. The coaxial stage monitor loudspeaker shall be the Crest Audio CPL 15CM+ or approved equivalent.