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dB Technologies SUB 918 18'' Active Subwoofer

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A new standard

You want your system to deliver a sound that your audience can really feel. That's exactly what you get with the dB Technologies SUB 918. Packed with a premium 18'' woofer and dB Tech's world-renowned Digipro G3 amplifier technology, this is a subwoofer that was built to perform. Flood your venue with deep, defined bass, and experience the freedom of RDNet control and configuration. All in a powerful, portable format with phenomenal flexibility.

Premium power, world-class clarity

Extend your low-end with unparalleled potential. The SUB 918 is the ultimate addition to any system, providing an incredible bass response combined with astounding flexibility. Premium components and technology work in harmony to deliver your sound the way it deserves to be. And with intuitive controls for advanced configuration directly from your subwoofer, you can take advantage of the SUB 918's adaptable design to suit the needs of any application.

A premium 18'' woofer with a large 4'' voice coil is driven by dB Tech's revered Digipro G3 Class-D amplifier, providing up to 1800W of efficient, clean power. Combined with an advanced DSP platform which ensures that your sound remains rich, full, and crystal-clear, you can enjoy distortion-free audio at huge SPLs of up to 134dB. Perfect for a diverse range of venues and events.

When it comes to getting your sub setup, you have plenty of options with easy-to-use controls. Integrated controls for input sensitivity, polarity, system delay, and your sub's crossover frequency let you optimise your SUB 918 to suit a variety of systems and applications. 4.5ms of delay (with up to 21ms available via Aurora Net), and crossover frequencies ranging from 70Hz to 110Hz give you a huge amount of scope when it comes to setting up your system. So you can be ready for anything.

The future of control

Next-level system configuration is finally here. The SUB 918 is capable of utilising the powerful RDNet protocol and Aurora Net software for in-depth real-time monitoring and remote control via your Windows or Mac computer. This gives you access to a variety of advanced subwoofer configurations, as well as giving you perfect low-end matches with dB Tech's RDNet-enabled full-range loudspeakers.

Getting setup is simple. Connect the Data Input socket to your dB Technologies Control 2 or Control 8 Interface (not included, interfaces must be purchased separately) with EtherCON cables, and connect the Data Output socket to the Data Input of a potential second RDNet-enabled device. Handy LED indicators give you instant visual feedback regarding the status of your RDNet connection. Then you can use dB Tech's free Aurora Net software to optimise your system.

Aurora Net gives you the ability to monitor and control your RDNet system in real-time. You can take advantage of advanced, and completely customisable DSP control and Digital Audio management via the same cable. It's easy to use, and gives you a huge variety of functions in a single intuitive interface. You can even utilise a simple single-click workflow for quick and easy operation. You can use the software to manage your entire RDNet PA system as a whole, or configure individual components on their own. The control is in your hands.


  • The perfect solution for extended the low-end of your PA system
  • Equipped with a single premium 18'' woofer with a large 4'' voice coil
  • Revered Digipro G3 Class-D amplifier delivers 900W (RMS) / 1800W (PEAK) power
  • Suitable for real-time monitoring and remote control via the RDNet protocol and Aurora Net Software
  • Capable of handling advanced subwoofer configurations alongside perfect low-end matches with dB Tech's RDNet-enabled full-range systems
  • On-board controls for input sensitivity, polarity, and DSP controls for a delay of up to 4.5ms (in 0.5ms steps)
  • Take advantage of up to 21ms delay capabilities via Aurora Net
  • Second rotary control for setting the crossover frequency (from 70Hz up to 110Hz)
  • Robust plywood cabinet provides maximum durability in a lightweight format
  • Two integrated handles on the top edges provide easy, hassle-free maneuverability
  • Wheel mounting slots on the back side for smooth, pain-free transportation
  • Designed for both vertical and horizontal use with two M20 pole mount cups (one on the top, one on the side)
  • Reliable power connectivity with PowerCON TRUE1 connectors


  • Model: SUB 918
  • Speaker Type: Active subwoofer
  • Frequency Response: 42Hz to cutoff frequency (crossover dependent) (-10dB)
  • Maximum SPL: 134dB (at 1m)
  • LF Transducer: 18'' diameter (4'' voice coil)
  • Amplifier Technology: Digipro® G3
  • Amplifier Class: Class-D
  • Power: 900W (RMS) / 1800W (PEAK)
  • Processor Controller: 28/56-bit DSP
  • AD/DA Converter: 24-bit/48kHz
  • Limiter: Peak, Thermal, RMS
  • Crossover Frequency: Variable (70Hz - 80Hz - 90Hz - 100Hz - 110Hz)
  • Controls: Input Sensitivity, Delay Rotary, Crossover Rotary, Polarity Switch
  • Signal Input: 1 x XLR female
  • Signal Output: 2 x XLR male
  • RDNET Connectors: Data IN / Data OUT (EtherCON connectors)
  • USB Connector: Standard USB type-B (for Service Data)
  • Cabinet:
    • Material: Plywood
    • Handles: Two (one per side)
    • Pole Mount Cup: 2 x M20 (one on top, one on side)
  • Cooling: Passive (convection)
  • Dimensions: 720mm x 530mm x 690mm / 28.3'' x 20.8'' x 27.1'' (W x H x D)
  • Weight: 41.8kg / 92.1lbs

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