The J-SUB is an actively driven 2-way bass-reflex design housing three long excursion neodymium 18" drivers, two drivers face to the front and one driver to the rear. The cardioid dispersion pattern resulting from this approach avoids unwanted energy behind the system, which greatly reduces the reverberant field at low frequencies and provides the greatest accuracy of low frequency reproduction. J-SUB cabinets can be used to supplement J8 and J12 loudspeakers in various combinations, ground stacked or flown, either integrated on top of a J8 / J12 array or as a separate column. The J-SUB cabinet is constructed from marine plywood and has an impact and weather protected PCP (Polyurea Cabinet Protection) finish. The front and rear of the loudspeaker cabinet are protected by a rigid metal grill and the side panels incorporate eight handles. Four 100 mm wheels and one EP5 or NL8 connector are mounted at the rear.
The d&b audiotechnik loudspeaker range is designed exclusively for operation with d&b amplifiers. These provide power as well as comprehensive control and protection functions tailored to achieve the performance, reliability and longevity associated with the d&b System approach. The d&b D80 and 30D amplifiers are recommended to drive the J-SUB.
The 2-Way active mode for the J-SUB requires two channels of the D80.
|Frequency response (–5 dB standard)||32 - 100 Hz|
|Frequency response (–5 dB INFRA mode)||32 - 70 Hz|
Max. sound pressure (1m, free field)1
138 dB SPL
139 dB SPL
|Cabinets per D80/30D||2|
|Configuration||Large format flyable cardioid subwoofer|
|Nominal impedance||4 Ω (front) / 8 Ω (rear)|
|Power handling capacity (RMS/peak 10 ms) front||800/3200 W|
|Power handling capacity (RMS/peak 10 ms) rear||400/1600 W|
|Components||3 x 18" driver|
1 x NLT4 F
optional 1 x EP5 or 1 x NL8
|Dimensions (H x W x D)||
540 x 1100 x 9453 / 1063 mm
21.3 x 43.3 x 37.23 / 41.8"
Application information is presented for guidance only. d&b reserves the right to make any necessary changes to the products and the published specifications. As part of the ongoing development program d&b tries to maintain the highest degree of product compatibility.
|EU Declaration of Conformity (CE)||International||04.10.2016||51 KB|
|J-Series cables and adapters||International||30.01.2014||830 KB|
|J-Series Rigging manual 1.4||English||08.06.2017||6 MB|
|J-SUB Manual 2.2||English||29.07.2017||1 MB|
|The J-Series brochure||English||19.05.2017||6 MB|
|TI 385 d&b Line array design, ArrayCalc V9.x||English||17.01.2018||1 MB|
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.