ARCHITECTURAL SPECIFICATIONS
OUTLINE Charlie 4

The loudspeaker shall be a single transducer, one-channel, passive, low-distortion short-throw point source device.
The transducers shall consist in a single four-inch high-power, high-dispersion full range speaker mounted in a sealed box, ensuring the emission from a single diaphragm to guarantee the best phase coherence over the whole range.
The lightweight cabinet shall be constructed in HCDF (Hydrophobic Compact Density Fiber). It shall be coated with textured polyurethane paint. The grill shall be of galvanized steel with an epoxy powder coating. The model shall have custom repainting RAL options.
The loudspeaker shall feature a pair of O-rings at the front and rear to assist with vibration-damping, stabilise and protect the cabinet.
The cabinet shall allow pole mounting operations, ceiling mounting and wall mounting through the dedicated brackets and the threaded points.
The connectors of the loudspeaker shall be one 4-pin Euroblock captive screw terminal. The amplified signal shall be fed to one central pin (-) and one external pin (+) of the Euroblock socket.
The unit shall have a DSP presets available on the suggested amplifier with all the processing and protections needed.
The frequency response shall be 110 Hz to 17 kHz (-10dB).
Maximum peak SPL output for one box shall be 118 dB calculated using +12dB crest factor signal @ 1m, free field (AES2-2012).
The nominal acoustic dispersion of a single cabinet shall be 60° axisymmetric.
The nominal impedance of a single enclosure shall be 16 Ω. The power handling of the box shall be 70 W AES continuous and 280 W AES peak.
The enclosure shall have a minimal visual impact and shall not exceed 120 mm (4 6/8”) in height, 120 mm (4 6/8”) in width, 126 mm (5”) in depth and the weight shall be 1.55 Kg (3.4 lb).