Compact Reference Subwoofer

  • High power compact 21" subwoofer
  • Exceptional impact
  • Improved efficiency
  • Lightweight (49 kg / 108 lbs)
  • Simple, fast, integral rigging
  • Supported by LA4X and LA12X



L-Acoustics subwoofers complement systems in applications where extended bandwidth is required. All subs incorporate high excursion drivers, ultra-low vibration walls and laminar airflow L-Vents with a flared profile, resulting in dramatic reduction of port noise, maximized dynamics and power handling and an exceptional level of performance.

L-Acoustics subwoofers can be deployed in various modes, making them versatile enough to address any rental or fixed installation application. Engineers and sound designers can choose from standard or cardioid configurations, creating a variety of symmetric and asymmetric directivity patterns adapted to each specific design.

The Subwoofer range includes:

SB15P Dedicated to the P Series
SB15m Dedicated to the X Series and flyable with Kiva
SB18 Companion to the X Series, flyable with Kara / Kara II
SB18i Companion to the X Series, flyable with Karai
SB18m Companion to the X Series, flyable with ARCS WiFo
KS21 Compact reference subwoofer
KS21i Compact reference subwoofer – install specific
SB28 Universal subwoofer
KS28 Reference subwoofer