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The FBT Subline 218SA is a high-performance active subwoofer engineered for demanding sound reinforcement applications. Featuring two high-excursion 18-inch woofers with 3-inch voice coils, this unit delivers a monumental 137dB peak SPL. The internal 1200W RMS Class D power amplifier ensures efficient operation and precise control over the low-frequency spectrum. Constructed from 15mm Baltic birch plywood, the cabinet is finished with a tour-grade, scratch-resistant coating for maximum longevity. Advanced digital signal processing offers selectable crossover points and phase alignment to integrate seamlessly with various full-range speaker systems. Integrated M10 rigging points and ergonomic aluminum handles facilitate secure installation and ease of transport. This subwoofer provides the necessary depth and impact for large venues, clubs, and outdoor events.
| Configuration | 2-Way Bass Reflex |
| Low Frequency Driver | 2 x 18 inch with 3 inch voice coil |
| Amplifier Power | 1200W RMS Class D |
| Maximum SPL | 137 dB |
| Frequency Response | 30Hz - 120Hz |
| Enclosure Material | 15mm Baltic Birch Plywood |
| Input Connectors | Stereo XLR |
| Finish | Black Scratch-Resistant Paint |