Architect's & Engineer's Specifications The ultra-compact loudspeaker shall consist of a 6.5 inch (165 mm) low frequency transducer with 1.2 inch (30 mm) voice coil and a 1 inch (25.4 mm) exit compression driver with a 1 inch (25.4 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 4.0V input, shall be 92 dB-SPL. Usable frequency response shall extend from 73 Hz to 19 kHz (10 dB below rated sensitivity, in full space, with no external equalization). Nominal impedance shall be 16 Ohms. Rated power capacity shall be at least 75 Watts continuous power and 300 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 enclosure shall be constructed from prime-grade 12 mm plywood. The loudspeaker shall be equipped with a total of thirteen (13) 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 12.52 inches (318 mm) high by 8.78 inches (223 mm) wide by 8.98 inches (228 mm) deep weighing 14.3 pounds (6.5 kg). The finish shall be a paintable lightly textured black or white. The ultra-compact loudspeaker shall be the Crest Audio CPL 6+ or approved equivalent.