RCF S 8018 II is a high-efficiency 18" subwoofer engineered to extend low-frequency performance in permanent sound installations. Designed for durability and acoustic power, it delivers deep bass response down to 30 Hz and exceptional SPL in a rugged, installation-ready enclosure.
The RCF S 8018 II brings powerful low-end reinforcement to large-scale installed systems, offering unmatched efficiency and long-term durability. At its core is an 18" neodymium transducer with a 4" voice coil, designed with inside/outside winding for improved thermal stability and reduced power compression—key for demanding venues.
This passive subwoofer uses a bass reflex design optimized for extended low-frequency reproduction, achieving an impressive 30 Hz–200 Hz range. With a peak SPL of 137 dB and sensitivity rated at 100 dB, the S 8018 II excels in environments that require impactful, controlled bass.
The cabinet is built from rugged Baltic birch plywood and finished in a black, heavy-duty textured epoxy coating for professional installations. It includes a 35mm M20 pole socket, integrated side handles, and Speakon® connectors on a recessed panel. The metal grille protects the driver while maintaining clean aesthetics for venues such as clubs, theaters, houses of worship, and event halls.
| Brand | RCF |
| Name | RCF S 8018 II | 18in Subwoofer - 137 dB SPL | Deep Bass for Installed Sound Systems |
| Primary Category | Subwoofer |
| Build Material | Baltic birch plywood with black textured epoxy coating |
| Dimensions | 25.16 x 20.87 x 30.31 in inches |
| Included Accessories | User manual |
| Mounting Options | 35mm M20 pole socket |
| Weight | 94.8 lb lb |
| Driver Configuration | 18" neodymium woofer with 4" inside/outside voice coil |
| Woofer Size | 18 inches inches |
| Frequency Response | 30 Hz – 200 Hz Hz |
| Impedance | 8 ohms ohms |
| Max SPL | 137 dB dB |
| Power Rating | 1500W RMS / 6000W Peak W |