• Double 21-inch
  • Vented Subwoofer

3400 W AES / 6800 W continuos

138 dB continuous /144 dB peak (T-20 Amplifier)


4 Ohm

125 kg

It is a driven 1-way bass-reflex design to extends the frequency response down to 27 Hz. It has two bass-reflex chambers designed around two 21-inch/4.5-inch voice coil high spec dual voice coil drive units and ultra-wide ports that drastically reduce low-frequency turbulence to deliver exceptional low frequency performance.

The SW221 is designed to streamline setup a deliver maximun result in minimum time uniting features unique to deliver solutions for rental and installations systems.

The SW221 can only be used in ground stacked configurations in conventional left/right setups as well as arranged in a cardioid subwoofer configurations.

The cabinet is constructed of 18mm ply Baltic birch and have an impact and weather resistant paint finish (Polyurea Protection), properly braced for the intended use. The front of the cabinet are protected by a hex-stamped rugged steel grille and each side panel incorporate four recesed handlers. The connectors are Neutrik NL4. Four 100mm wheels are available as optional accesorie to mounted at the rear.

SW221 providing a coste efective solution for professional of touring, integrator and installers delivers an intelligent and flexible system to at any budget.


  • High temperature 4.5-inch voice coil drivers
  • 2 x 21-inch-LF cone driver
  • High-output and high-definition sound


  • Stadium
  • Infra extension for High-End night club
  • Sound System Rental
  • Arenas
Frequency Response:                                                 27 Hz – 90 Hz, Free Field: 30Hz-100Hz ±3dB, measured on axis
Components:                                                                Low 2×21” LF driver
Nominal Dispersion:                                                  Standard or Cardioid
Impedance:                                                                   4 Ohm
Axial Sensitivity:                                                         104 dB (1w/1m)
Calculated SPL:                                                            138 dB continuous /144 dB peak (T-20 Amplifier)
Power Handling:                                                          3400 W AES / 6800 W continuos
Dimmensions (HxWxD) (millimeters/inches):     1404x835x616 mm / 55.27″x32.87″x24.25″
Net Weight (kg/Pounds):                                           125 kg / 275,578 lbs
Construction:                                                                18mm birch plywood. Finished in black semi-matt textured Durawound weatherized coating. Two recessed carrying handle
Grille:                                                                               Powder coated perforated steel

  • Colors Versions:
    -RAL Colors
  • 100 mm rotating wheels
  • Up three units Caster Frame
  • FUND-221 Protective transit soft covers for one SW-221. Other configurations are available upon request
Infra extension for High-End night club
Sound system rental