Architectural specifications The 2-way biaxial, passive loudspeaker shall consist of a 12" low frequency driver with a neodymium magnet assembly and a 1.4" neodymium compression driver mounted on a rotatable CD-Horn. The bass-reflex enclosure shall be made from marine plywood with an impact resistant black paint finish. Special colours according to RAL table and a weather resistant option shall be available upon request. The drivers shall be protected by a powder coated metal grill with an acoustically transparent foam. The cabinet shall be Ball Impact Resistant according to DIN 18032-3 for schools and sports halls. The cabinet shall incorporate two M8 threaded inserts on the rear panel for the secure attachment of wall mounts. The cabinet shall incorporate one M10 threaded inserts on the top and bottom panel for the secure attachment of mounting brackets. The connection panel on the back shall be recessed and fitted with two NL4 sockets and a two pole screw terminal block. A cover plate for protection of the connection panel shall be included. The loudspeaker shall only be operated by a dedicated, compatible controller amplifier. The loudspeaker shall have a nominal dispersion angle of 110° x 55° (hor. x vert.). The loudspeaker shall only be operated by a dedicated, compatible controller amplifier. The power handling capacity shall be 300 W RMS and 1600 W peak ( 10ms). The frequency response (–5 dB) measured on axis shall be 48 Hz to 18 kHz with a maximum sound pressure of at least 130 dB or 133 dB respectively when operated with one of its dedicated controller amplifiers. The dimensions (W x H x D) shall not exceed 338 x 638 x 365 mm (13.3" x 25.12" x 14.37") and shall weigh no more than 17 kg (37 lb). The loudspeaker shall be the 12S-D by: d&b audiotechnik GmbH & Co. KG.