PA SUBWOOFER (SELF-AMPLIFIED) 'Mackie DLM12S active subwoofer. 2000W ultra-efficient class D power amp. TruSource T. SPL Max technology: 125dB @ 1m. Mackie designed TruSource magnet driver, vertically aligned. 12 '' woofer with 3 '' coil. Incredibly compact and light. Powerful TruSource DSP that provides perfect clarity, consistent dispersion, and unmatched fidelity. Powerful integrated Digital DLP mixer with bright OLED display. Cup to adapt an SPM300 to fly the DLM series. '