• 21″ Beyma driver
• 1600 W Continuous ,3200 W Programme ,6400 W Peak
• 4.0″ Quattro LF voice coil (4 layers)
• 147 dB System Peak SPL
• Extreme features… for extreme (and controllable) sub sound pressure levels
21 Beyma driver 1600 W Continuous ,3200 W Programme ,6400 W Peak 4.0 Quattro LF voice coil (4 layers) 147 dB System Peak SPL Extreme features for extreme (and controllable) sub sound pressure levels