FBT Mitus 121SA Active Subwoofer


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  • Large vented bass-reflex subwoofer, extremely deep low frequency extension
  • 530 mm (21’’) custom B&C neodymium high excursion subwoofers with 115 mm (4.5’’) coil
  • Frequency response from 29Hz to 100Hz
  • Class D amplifiers delivering 1200Wrms
  • DSP with 8 presets, cardioids and infra configurations, delay
  • Control panel with XLR input and link, volume, presets, delay, phase 0°-180°, ground-lift
  • 18 mm (3/4’’) birch plywood enclosure with large reflex vent free from turbulence, scratch resistant black paint
  • M20 Stand socket and six FBT design aluminium handles
  • Optional 4 swivel-mount casters 80 mm (3.15’’) on request
  • Perfect low-frequency extension for the MITUS range and ideal companion for the MITUS 206LA line array for ground stack applications with optional MT-B206 metal base


Code: 31758
Configuration: 1 way
Built-in amplifier LF/HF: 1200 W RMS
Built-in amplifier peak LF/HF: 2400 W
Frequency response: 29Hz-100Hz -6dB
Low Frequency woofer: 1×21 – 4.5 coil neodymium inch
High Frequency driver: – inch
Maximum SPL cont/peak: 133/137 half-space dB
Dispersion: omnidirectional HxV
Input impedance: 22 Kohm
Crossover Frequency: preset dependant KHz
AC Power requirements: 640 VA
Input connector: XLR With loop
Power cord: 5/16.4 m/ft
Net Dimension (WxHxD): 590x780x760 – 23.2×30.7×29.9 mm/inch
Net Weight: 58/127.8 kg/lb
Transport Dimension (WxHxD): 805x650x930 – 31.7×25.6×36.6 mm/inch
Transport Weight: 66.5/146.6 Kg/lb

Click here to download FBT Speakers FBT Mitus full range PDF

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