J-SUB Architectural specifications

The subwoofer system shall have forward and rear facing elements to produce cardioid or hypercardioid dispersion patterns. The front and rear elements of the subwoofer shall be driven by separate channels of a dedicated and compatible amplifier, containing loudspeaker specific configurations and algorithms to select cardioid or hypercardioid operating modes. The subwoofer shall exhibit extremely low power compression this reason use very large vents.
The cabinet shall incorporate 3 x 18" neodymium LF drivers, two forward and one rear facing.
The enclosure shall be constructed from marine plywood with an impact resistant and weather protecting PCP (Polyurea Cabinet Protection) finish. The cabinet front shall be protected by a perforated steel grill backed with acoustic foam.
The cabinet shall incorporate a three point rigging and capable of suspending the subwoofer within J8/J12 arrays or as pure sub column.
The power handling of the forward elements shall be 800/3200 W (RMS/peak 10 ms) while the power handling of rear facing element shall be 400/1600 W (RMS/peak 10 ms).
The frequency response (–5 dB) measured on axis shall extend from 32 Hz - 100 Hz in standard mode and form 32 Hz - 70 Hz in INFRA mode with a maximum sound pressure level (SPLmax) (peak/1 m) of at least 139 dB.
The cardiod dispersion shall be switchable between cardioid and hyper cardiod. Within flown sub columns a vertical splay of –3° shall be mechanically adjustable.
The connection panel on the back shall be recessed and fitted with speakon NLT4 F/M sockets (EP5 or NL8 connectors as an option).
The dimensions (W x H x D) shall not exceed 1100 x 540 x 1062 mm (43.3" x 21.3" x 41.8") and shall weigh no more than 106 kg (234 lb).

The loudspeaker shall be the J-SUB by: d&b audiotechnik GmbH & Co. KG.