The FBT X-SUB 115SA is a 15" powered subwoofer designed for portable PA systems and mid-scale live events. It pairs seamlessly with the X-PRO and X-LITE full-range cabinets, extending the low-frequency response and adding the kind of physical impact that makes any performance memorable.
- 1200W Class D amplification — clean, powerful bass output
- 15" woofer, 3" voice coil — tight, musical bass reproduction
- 42 Hz – 120 Hz frequency response — solid sub-bass extension
- 135 dB peak SPL (half-space) — impressive output for its size
- 4 DSP presets — flexible crossover and EQ options
- Phase reverse switch (0° / 180°) — precise integration with full-range tops
- Stereo XLR/Jack inputs and high-pass outputs — simplified signal routing
- M20 top-mounted pole adapter — support a full-range speaker on top
- 15 mm birch plywood construction — durable, road-ready cabinet
Compatible accessories: XS-C 15S (nylon cover), XS-CH 15S (nylon cover with wheels), KW-X SUB (wheel kit).
| Configuration | Bass reflex subwoofer |
|---|---|
| LF Driver | 15" woofer, 3" voice coil |
| Built-in Amplifier | 1200W, Class D |
| Frequency Response | 42 Hz – 120 Hz (–6 dB) |
| Maximum SPL (half-space peak) | 135 dB |
| Dispersion | Omnidirectional |
| DSP Presets | 4 |
| Input Impedance | 22 kΩ |
| Input Connectors | XLR with loop-through |
| Cabinet Material | 15 mm birch plywood, scratch-resistant finish |
| Net Dimensions (W × H × D) | 455 × 584 × 570 mm |
| Net Weight | 30.3 kg |
| Power Cord | 5 m / 16.4 ft |
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All prices are exclusive of GST and freight, which are automatically calculated on order confirmation and/or checkout. Items in stock are generally dispatched within 1-2 working days of order being confirmed. Standard MDR terms and conditions (available below) apply to all orders.