Architectural specifications The loudspeaker shall consist of a 15" long excursion low frequency neodymium driver in bass-reflex design. The loudspeaker shall only be operated by a dedicated, compatible controller amplifier. The cabinet enclosure shall be made from marine plywood with an impact and weather resistant black paint finish. The driver shall be protected by a rigid metal grill backed by an acoustically transparent foam. The cabinet top panel shall incorporate one handle. The cabinet shall incorporate a three point rigging system for the assembly of vertical SUB columns and/or mixed T-Series arrays in conjunction with a dedicated flying frame. The connection panel on the back shall be fitted with two EP5 sockets (NL4 connectors as an option). The power handling capacity shall be 300 W RMS and 1600 W peak (10 ms). The frequency response (–5 dB) measured on axis shall be 47 Hz to 140/100 Hz with a maximum sound pressure of at least 130 dB. The dimensions (WxHxD) shall not exceed 470 x 431 x 400 mm (18.5" x 17" x 15.75") and shall weigh no more than 17 kg (37 lb). The loudspeaker shall be the T-SUB by: d&b audiotechnik GmbH & Co. KG.