Single 18" flyable subwoofer with BrainCoreTM DSP application technology. Customized Audiocenter ferrite driver. RMS Power: 1600W. Max SPL: 138dB. K-LA118A Active DSP-controlled Subwoofer is a compact and flyable sub to pack with K-LA12A active line array.K-LA118A is with Audiocenter customized 18” ferrite driver with 4’’ voice coil. It’s also a good choice to pack with all other Audiocenter full range speakers. The K-LA118A is with front loaded double opening design and dual LF output. With 6th order band pass filter function, the cabinet design of K-LA118A can improve LF performance.