CUE-FOUR
The system shall consist of an active or passive separated 3-way loudspeaker, specially designed as a stage monitor, which is driven and protected by a special controller output stage. The loudspeaker should contain a 15-inch loudspeaker in a bass reflex tuned cabinet for the low frequency range. The used loudspeakers should be impregnated weatherproof. In the mid-range, a pressure chamber driver with a 3.5-inch ring diaphragm arranged axially with the cone loudspeaker and coaxially arranged in front of the tweeter driver should work. In the high-frequency range, a pressure chamber driver with a 1.75 inch ring diaphragm is to operate. The pressure chamber drivers used should be coupled to a common asymmetrical horn. Its radiation characteristic should be 60° horizontal and 90° vertical. The continuous load capacity of the system should be 1,000 watts RMS. The loudspeaker should have a nominal impedance of 8 Ohm. The usable system bandwidth should be 54 Hertz to 21,000 Hertz (-3 dB). The maximum peak sound pressure level should be 139 dB, measured with pink noise at a distance of 1 m, under half-space conditions and with a crest factor of 6. The loudspeaker cabinet should be made of birch multiplex and sealed with a weather- and moisture-resistant polyurea coating (PU). The particularly flat cabinet, optimised for use on the floor, is designed to provide optimum dispersion characteristics at ear level for artists and can be tilted by 5° using fold-out tilt controls, making it more flexible to use as a stage monitor. The front of the loudspeaker should be equipped with a ball throwing protective grille, which is backed with acoustically neutral foam. Its physical dimensions should be 540 mm in width, 574 mm in height and 579 mm in depth. The weight of the loudspeaker should be 29 kg. The loudspeaker should have M6 mounting points with which special accessories can be mounted. It should be possible to screw an optional stand flange to the loudspeaker cabinet. With optional flying and mounting brackets, the speaker can be flown horizontally or mounted on the wall. The loudspeaker box should be connected via two 4-pole SpeakON sockets on the underside. Special cable ducts on the underside should simplify the wiring. The manufacturer's warranty should be 5 years.