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JBL Professional SRX900 Series: Quick Lookplay button

JBL Professional SRX900 Series: Quick Look

JBL Professional SRX900 Series: Technical Overviewplay button

JBL Professional SRX900 Series: Technical Overview

JBL Professional SRX900 Series: Worldwide Launch Event Recordingplay button

JBL Professional SRX900 Series: Worldwide Launch Event Recording

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JBL Professional SRX900 Series: Groundstacking Tutorial


collapse expand iconDescription

The JBL SRX918S 18" powered subwoofer redefines what's possible in a self-contained bass system. Featuring dual 18" woofers and a built-in 2,000W amplifier, this innovative sub reaches down to 35Hz with chest-thumping intensity. Now musicians and audio professionals alike can experience the performance of a full-scale bass rig in a streamlined, all-in-one design.

Differential Drive Woofers Deliver Seismic Lows

At the heart of the SRX918S are proprietary Differential Drive woofers, which utilize dual voice coils and gaps to improve power handling, reduce distortion, and achieve a wider dynamic range. The neodymium magnets and integrated heat sinks allow these 18" drivers to reach extreme excursion levels without compromise, resulting in a frequency response that extends to the very limits of human hearing.

2,000W Amplifier Built for High-Powered Low End

Driving the SRX918S's seismic woofers is a custom 2,000W Class D amplifier purpose-built by JBL engineers. With a universal power supply that accepts voltages from 100 to 250V, this amp delivers high-current power with efficiency, enabling maximum output levels for hours on end. Advanced DSP—including 24-band EQ, 2,000ms of delay, and JBL's Array Size Compensation filter—provides comprehensive control over the sub's tone and timing.

Road-Ready and Install-Friendly

While ideal for tour sound, the SRX918S is equally suited to permanent installations thanks to its plywood enclosure, three-point rigging system, and IP54 weather resistance. Multiple cabinets can be suspended, stacked, or pole-mounted to suit any venue. Ethernet and Wi-Fi connectivity offer network control from JBL's system design and management software. With threaded inserts and available accessories like wall mounts, this subwoofer adapts to nearly any application that calls for chest-thumping low end.

Legendary JBL Heritage

For over 70 years, JBL has engineered premium sound systems and components for the world's most prestigious venues, tours, and studios. That same expertise is poured into every SRX918S, from the differential woofers to the precision waveguides to the robust plywood cabinet. Experience the performance, power, and pedigree of a legendary brand—all contained in a single powered sub.

Open Box JBL SRX918S 18" Powered Subwoofer Level 2  197881129699
Open Box JBL SRX918S 18" Powered Subwoofer Level 2  197881129699
Open Box JBL SRX918S 18" Powered Subwoofer Level 2  197881129699

collapse expand iconFeatures

  • High-performance, high-density system solution in a truck-pack friendly format
  • High-power-handling transducers deliver extremely low distortion, high fidelity and class-leading output
  • Precision waveguides provide exact pattern control
  • User-controllable DSP includes 24-band parametric EQ, delay, JBL Array Size Compensation and FIR-based Throw Distance Compensation filters
  • LevelMax limiting uses sophisticated excursion-control algorithms to protect transducers from mechanical damage
  • Integrated into JBL Performance, Line Array Calculator 3 and Array Link applications
  • Radiation Boundary Integrator (RBI) mounts transducers on a single horn, improving horizontal directivity while minimizing cabinet size
  • Differential Drive dual-voice coil, dual-gap woofer design delivers better heat dissipation, lower power compression and wider dynamic range than single-coil designs
  • Built-in, passively cooled Class-D amplification
  • Rear-panel LCD provides complete access to control features
  • Dual Neutrik etherCON connectors
  • Supports HARMAN HControl ethernet protocol for improved network performance and simplified network management
  • Innovative three-point rigging system makes suspending systems easy and safe, regardless of system size or user experience level
  • 18 mm plywood subwoofer enclosures are acoustically optimized and designed for a clean, modern look
  • Enclosed side panels with integrated handles simplify storage and transport
  • Available accessories include array frames, pole-mount and truss-clamp adapters, cases, carts and covers (sold separately)
  • Power cable not included. A True1 cable will need to be purchased separately for operation.

      collapse expand iconSpecs

      • Frequency response: 35Hz–90Hz (–10dB)
      • Audio I/O: (2) Neutrik XLR
      • (1) JBL 2279G-1, 18" diameter, dual 3" voice coil, ferrite Differential Drive
      Dimensions and Weight
      • Dimensions (HxWxD): 22.6" x 26.9" x 26.9"
      • Weight: 98 lb.

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