FBT X-Sub115SA

FBT X-Sub115SA 15″ powered subwoofer, 1200W RMS Class D amp, 42Hz – 120Hz freq resp.

Original price was: $1,899.00.Current price is: $1,635.00.

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The FBT X-Sub115SA has been completely redesigned with a bass-reflex configuration, built in birch plywood and aimed to extend the low frequency response to a wide range of FBT speaker systems.

Created with the aim to maximize SPL/SIZE ratio, they have Class D amplifiersswitch mode power supply and Digital Signal Processor with presets to match any other FBT speaker.

With IN/OUT stereo connectors, it is possible to use only one subwoofer with Left and Right speakers. The Neutrik TRUE1 Power connection negates the need for a power switch while offering a solid locking connection.

Optional wheels,, ergonomic integrated carrying handles and tour-grade plywood cabinets allow an easy transport


  • Bass-reflex design with high SPL and punch
  • 380mm (15″) high excursion magnet woofer with 75mm (3″) voice coil
  • Frequency response from 40Hz to 140Hz
  • New amplifier engineered and manufactured by FBT, 700W RMS LF in Class D
  • Digital Signal processor with 8 presets, 2 equalization with 2 LPF Crossover settings, cardioid configuration
  • Control panel with Stereo XLR in/outs, Volume, EQ presets, 8 steps Delay from 0.25m to 3.5m, Phase Reversal Switch0°-180°, 3 status LED indicators
  • 15 mm (0.59″) birch plywood scratch resistant enclosure with internal bracing
  • M20 (20mm) top mount speaker stand socket and two aluminum ergonomic FBT handles


  • Brand FBT
    Gross Shipping Weight – Volumetric (kgs) 59.400000
    Speaker Size (Inches) 15″
    Vertical Coverage Angle Omnidirectional
    Output Power – Peak (Watts) 1400
    Output Power – RMS (Watts) 700
    Signal Processing (DSP) Yes
    Maximum Peak SPL 135 Half-space dB
    Analog Inputs Stereo XLR with loop
    Analog Outputs HP out
    Frequency Range 38Hz – 140Hz -6dB
    Speaker Type Powered
    Horizontal Coverage Angle Omnidirectional
    LF Driver Size 15″


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