X-SUB 118SA is an 18″ active subwoofer with bass-reflex design, developed as the ideal low-frequency extension for FBT’s X-LITE and X-PRO loudspeaker lines. Equipped with a high-efficiency 18″ woofer and a 3″ voice coil, it delivers up to 136 dB SPL and covers a frequency range of 38 Hz to 120 Hz (-6 dB). The 1200W Class D amplifier ensures powerful and consistent low-end performance.
The onboard DSP processor provides 4 presets, allowing flexible system configuration. The rear panel features stereo XLR/Jack combo inputs and outputs, stereo XLR HP filtered outputs, level control, phase reverse switch (0°/180°), preset selector, and LED indicators for protection and limiting.
Constructed from 18 mm birch plywood with a scratch-resistant black paint finish, the cabinet is equipped with an M20 top mount for satellite poles, two ergonomic aluminum handles, and pre-drilled positions for optional 100 mm wheels. Ideal for fixed installations, live events, and portable PA systems.
Configuration: Bass reflex subwoofer
Low Frequency Woofer: 18″ / 3″ VC
Integrated Amplifier: 1200W, Class D
Max SPL: 136 dB
Material: 18 mm birch plywood with scratch-resistant paint
44146
bass reflex
1200W
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38Hz - 120Hz -6dB
18” / 3” coil
136dB half space
Omnidirectional
22 kOhm
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600W
XLR with loop
5m / 16.4 ft
510 x 655 x 630 mm / 20 x 25.7 x 24.8 inch
39.8 kg / 87.7 lb
785 x 815 x 685 mm / 30.9 x 32.1 x 26.9 inch
47.5 Kg / 104.7 lb