J subwoofer

J-SUB subwoofer front
J-SUB subwoofer line array
J-SUB subwoofer front
J-SUB subwoofer line array

J subwoofer

Subwoofers

Large format flyable cardioid subwoofer

  • Components 3 x 18"
  • Dispersion Cardioid
  • max SPL 139 dB
  • Weight 106 kg / 234 lb

Product description

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.

Amplifiers

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.

D80

30D

Architectural specifications for detailed project planning

Do you require architectural specifications? For a d&b system or a specific d&b Series? Here are the most important technical specifications ready for download.

System data
Frequency response (-5 dB standard)
32 - 100 Hz
Frequency response (–5 dB INFRA mode)
32 - 70 Hz
Max. sound pressure (1m, free field)1
with 30D
with D80

138 dB SPL
139 dB SPL
Cabinets per D80 (2-Way Active)
2
Loudspeaker data
Configuration
Large format flyable cardioid subwoofer
Nominal impedance
4 Ω (front) / 8 Ω (rear)
Power handling capacity front (RMS/peak 10 ms)
800/3200 W
Power handling capacity rear (RMS/peak 10 ms)
400/1600 W
Components
3 x 18" driver
Connections
1 x NLT4 F
optional 1 x EP5 or 1 x NL8
Dimensions / weight
Dimensions (H x W x D)
540 x 1100 x 9452 / 1063 mm
21.3 x 43.3 x 37.23 / 41.8"
Weight
106 kg
234 lb

1 SPL max peak test signal: pink noise with crest factor 4
2 dimensions without wheels

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.

 
Release
Category
File type
Size
Language
 
TI385 d&b Line array design 10.2
11.10.2018
Technical information
PDF
4 MB
English
The J-Series brochure
12.06.2018
Brochures
PDF
7 MB
English
3D CAD drawings - J-SUB
11.05.2018
CAD Data 2D/3D
ZIP
1 MB
2D CAD drawings - J-SUB
09.05.2018
CAD Data 2D/3D
ZIP
82 KB
EU Declaration of Conformity (CE)
06.03.2018
Other documentation
PDF
53 KB
English
J-SUB Manual 2.2
29.07.2017
Manuals
PDF
1 MB
English
J-Series Rigging manual 1.4
08.06.2017
Manuals
PDF
6 MB
English
J-Series cables and adapters
30.01.2014
Brochures
PDF
830 KB
English
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