Sound Barrier iLX18DSUB — 18″ Active Subwoofer with Selectable Crossover
iLX18DSUB Overview
The Sound Barrier iLX18DSUB is an 18-inch active subwoofer built for professional sound reinforcement in large venues, live events, nightclubs, and touring applications. Powered by a high-efficiency Class-D amplifier, the iLX18DSUB delivers extended low-frequency output with strong headroom and control. Onboard system controls include a selectable crossover frequency (80Hz, 100Hz, 120Hz, or 150Hz) and a 0°/180° phase switch for precise alignment with full-range loudspeakers. This subwoofer is well suited for system integrators, touring engineers, and venue operators who require flexible, reliable low-frequency reinforcement.
The iLX18DSUB’s Full/HPF output selector allows connected loudspeakers to receive either a full-range signal or a high-pass filtered signal above 120Hz, streamlining system configuration without additional outboard processing. A Ground Lift switch is also included to address noise issues common in complex multi-device setups.
Key Features
- 18″ Large-Format Driver — Optimized enclosure design and large-format woofer deliver authoritative, extended low-frequency output suited for high-demand professional environments
- High-Efficiency Class-D Amplification — Provides powerful bass output with excellent thermal management and headroom for sustained operation
- Selectable Crossover Frequency — Four onboard crossover settings (80Hz, 100Hz, 120Hz, 150Hz) allow precise integration with a wide range of full-range loudspeakers
- 0°/180° Phase Switch — Enables proper acoustic alignment with full-range cabinets regardless of placement or system configuration
- Full / HPF Output Selector — Routes either a full-range or high-pass filtered signal (above 120Hz) to connected loudspeakers, reducing the need for external crossover processing
- Ground Lift Switch — Helps eliminate hum and noise caused by ground loops in complex professional audio installations
- Rugged Construction — Built to withstand the demands of touring, installed sound, and nightclub environments

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