Architectural specifications

The loudspeaker shall be passive 2-way design housing a 4.5" neodymium driver built into a bass-reflex design and a 0.75" HF dome tweeters mounted on a CD horn thus providing dispersion characteristics of 120° x 90° (hor. x vert.). The frequency response shall extend from 77 Hz to 20 kHz. The loudspeaker shall be used as a stand-alone system or supplemented by applicable subwoofers.
The cabinet shall be a compact mechanical design with an asymmetric cabinet shape. The enclosure shall be injection molded with an impact resistant paint finish. The front of the cabinet shall be protected by a rigid metal grill. Two M8 threaded inserts shall be incorporated in the back panel to connect to different rigging accessories.
A swivel bracket shall be available to allow the loudspeaker to be used as a main or fill system either flown or mounted on a high stand. In horizontal orientation, the cabinet shall be usable as a frontfill loudspeaker.
Different brackets shall enable mounting under ceilings or balconies as a single unit or in closely coupled clusters of two cabinets.
An optional back box shall be available for flush mounting the loudspeaker into ceilings or walls, either in horizontal or in upright position. Within the back box, the loudspeaker shall be able to be tilted up or down by 20° in 5° increments. The back box shall be just 140 mm high to allow in-stair mounting.
The loudspeaker shall only be operated by a dedicated, compatible controller amplifier.
The power handling capacity shall be 75 W RMS and 250 W peak (10 ms). The frequency response (–5 dB) measured on axis shall be 77 Hz to 20 kHz with a maximum sound pressure of at least 117 dB.
The dimensions (W x H x D) shall not exceed 220 x 128 x 150 mm (8.7" x 5" x 5.9") and shall weigh no more than 1.6 kg (3.5 lb).

The loudspeaker shall be the 42S by: d&b audiotechnik GmbH & Co. KG.