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The SUBLINE 218SA delivers profound low-frequency reinforcement for professional sound reinforcement systems. Constructed from premium Baltic birch plywood, the cabinet features an internal tour-grade scratch-resistant finish. Dual 18-inch high-excursion woofers are driven by a high-efficiency 1200W RMS Class D power amplifier. This active subwoofer achieves a staggering 137dB SPL, ensuring massive impact in large venues. Integrated DSP provides six presets for versatile acoustic tailoring to suit any performance environment. Ergonomic handles and an M20 pole mount socket offer practical handling and mounting options for mobile installations. Professional-grade XLR connections ensure clean signal integrity across the entire 30Hz to 100Hz frequency range.
| Type | Active Bass Reflex Subwoofer |
| Drivers | 2 x 18 inch Woofer with 3 inch Voice Coil |
| Power Output | 1200W RMS / 2400W Peak |
| Frequency Response | 30Hz - 100Hz |
| Maximum SPL | 137dB |
| Enclosure Material | 0.59 inch Baltic Birch Plywood |
| Inputs/Outputs | Stereo XLR In/Out/Link |
| DSP Presets | 6 Switchable EQ Settings |