The FBT X-SUB 118SA is an 18" powered subwoofer built to complement the X-PRO and X-LITE active speaker ranges. With a peak half-space SPL of 136 dB and a frequency response extending to 38 Hz, it delivers the deep, tight bass foundation that live sound demands — from club nights to outdoor festivals.
- 1200W Class D amplification — efficient, high-headroom bass power
- 18" woofer, 3" voice coil — authoritative low-frequency output
- 38 Hz – 120 Hz frequency response — deep extension for music and effects
- 136 dB peak SPL (half-space) — capable of filling large open-air venues
- 4 DSP presets — two frequency responses, each with two crossover options
- Phase reverse switch (0° / 180°) — precise integration with top cabinets
- Stereo XLR/Jack inputs and high-pass outputs — clean signal routing to full-range tops
- M20 top-mounted pole adapter — stack a full-range speaker directly on top
- 15 mm birch plywood construction — built for the rigours of live touring
Compatible accessories: XS-C 118S (nylon cover), XS-CH 118S (nylon cover with wheels), KW-X SUB (wheel kit).
| Configuration | Bass reflex subwoofer |
|---|---|
| LF Driver | 18" woofer, 3" voice coil |
| Built-in Amplifier | 1200W, Class D |
| Frequency Response | 38 Hz – 120 Hz (–6 dB) |
| Maximum SPL (half-space peak) | 136 dB |
| Dispersion | Omnidirectional |
| DSP Presets | 4 |
| Input Impedance | 22 kΩ |
| Input Connectors | XLR with loop-through |
| Power Consumption | 600W |
| Cabinet Material | 15 mm birch plywood, scratch-resistant finish |
| Net Dimensions (W × H × D) | 510 × 655 × 630 mm |
| Net Weight | 39.8 kg |
| Transport Dimensions (W × H × D) | 785 × 815 × 685 mm |
| Transport Weight | 47.5 kg |
| Power Cord | 5 m / 16.4 ft |
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