JBL Single 18-inch powered subwoofer

JBL SRX918S Single 18-inch Active Subwoofer

The JBL SRX918S Single 18-inch Active Subwoofer is engineered to complement SRX900 Series full-range sound reinforcement systems, delivering powerful and controlled low-frequency performance for professional live sound applications. Designed for touring, rental, and installation environments, this active subwoofer integrates advanced transducer technology, onboard DSP, and efficient amplification into a streamlined plug-and-play solution.

At the core of the SRX918S is the JBL 2279-1 18-inch woofer featuring Differential Drive technology. This dual voice coil, dual gap design enhances heat dissipation, reduces power compression, and provides a wider dynamic range compared to conventional single-coil systems. The result is consistent, high-output bass performance with improved reliability under demanding operating conditions.

The subwoofer incorporates built-in DSP and amplification to ensure consistent tonal balance and optimal system integration anywhere in the world. With 1100 watts continuous power handling and 2500 watts peak power capability, the SRX918S delivers strong low-frequency extension with a frequency range of 35 Hz to 90 Hz (-10 dB) and a maximum peak SPL of 134 dB.

A large low-frequency port design improves airflow efficiency and minimizes audible turbulence, even at elevated output levels. System control is supported by a full-featured software package compatible with Windows, macOS, and iPad OS platforms, enabling precise configuration and monitoring. The JBL SRX918S provides dependable, high-performance bass reinforcement for professional SRX900 deployments.

Features of SRX918S

• Single 18-inch active subwoofer design

• JBL 2279-1 Differential Drive woofer

• Dual voice coil, dual gap technology

• Enhanced heat dissipation performance

• Reduced power compression characteristics

• Wider dynamic range capability

• Integrated DSP processing

• Built-in amplification system

• 1100W continuous power rating

• 2500W peak power capability

• Large low-frequency port design

• Reduced airflow turbulence at high output

• Cross-platform system control software

Specifications of SRX918S