L-Acoustics CS1 Subwoofer

L-Acoustics CS1 Cardioid Subwoofer 4 × 21" Amplified by 
LA12X / LA7.16 / LA7.16i The CS1 represents a breakthrough in large-format subwoofer design, introducing L-Acoustics' revolutionary cardioid topology to the CS Series. Housing four 21″ transducers in a single enclosure, this amplified subwoofer delivers extreme output with surgical precision. Engineered for large-scale productions, the CS1 features multiple directional modes, Cardioid, Supercardioid, and Side Rejection, that focus low-frequency energy exactly where needed. This intelligent directivity preserves on-stage clarity while maintaining control throughout the venue, eliminating the acoustic chaos typical of conventional subwoofers. Built on an ultra-dense acoustic architecture, the CS1 combines raw power with predictable, consistent performance across diverse applications. Whether reinforcing arena shows, festivals, or installed systems, it delivers full impact to the audience without compromising mix integrity or site control. Compatible with LA12X, LA7.16, and LA7.16i amplifiers for seamless integration into L-Acoustics ecosystems. Specifications: Max SPL: 150 dB (CS1_X) Bandwidth: 25 Hz (CS1_60) Transducers: LC: 2 x 21" LF: 2 x 21" Weight: 180 kg / 397 lbs Dimensions (W x H x D): 1514 mm (60 in) x 588 mm (23 in) x 1117 mm (44 in)