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The FBT Subline 218S is a high-performance passive subwoofer designed for large-scale sound reinforcement applications. Featuring two massive 18-inch high-excursion woofers, this unit delivers profound low-frequency extension and exceptional acoustic pressure. The bass-reflex design is housed in a tour-grade birch plywood enclosure, ensuring durability and sonic integrity during demanding performances. Its passive configuration allows for versatile integration with external power amplifiers and digital signal processors. Integrated ergonomic handles and a rugged steel grille provide ease of transport and protection for internal components. This subwoofer is engineered to provide the punch and clarity required for live concerts, clubs, and permanent installations. Professional-grade Neutrik Speakon connectors ensure secure and reliable signal transmission in any environment.
| Configuration | Passive Bass Reflex |
| Transducers | 2 x 18" woofers with 3" voice coils |
| Frequency Response | 30Hz - 120Hz (-6dB) |
| Power Handling (RMS) | 1200 Watts |
| Peak Power Handling | 2400 Watts |
| Nominal Impedance | 4 Ohms |
| Sensitivity | 101dB (1W/1m) |
| Maximum SPL (Peak) | 137dB |
| Enclosure Material | 0.71" Baltic Birch Plywood |
| Input Connectors | 2 x Neutrik Speakon NL4 |