LD Systems ICOA 3000W 21" Powered Subwoofer

The LD Systems ICOA PRO SUB 21 A is a 3 kW powered subwoofer engineered for touring and installation work where compact footprint meets serious low-end authority. Built around a 21" neodymium driver with 4.5" voice coil and long-throw suspension, this bass reflex design delivers tight, dry bass down to 29 Hz with minimal colouration. At 1500 W RMS (3000 W peak) and 136 dB max SPL, the Class D amplifier provides genuine headroom for live events, club installations, and mobile DJ setups without dynamic compression or distortion. The DSP handles signal processing with 24-bit/48 kHz conversion, four-band parametric EQ, three selectable crossover frequencies (80, 100, 120 Hz), and a multiband limiter monitoring temperature and voltage. Delay adjustment spans up to 50 metres for phase alignment in complex rigs. Connectivity includes two XLR inputs, two XLR outputs, PowerCON loop-through, and Bluetooth 5.1 for wireless streaming and app control. The 18 mm birch plywood cabinet fits standard vans (Mercedes Sprinter, Fiat Ducato, Ford Transit widths at 562 mm), while eight ergonomic handles and optional castor board reduce setup friction. The cabinet polyurea coating and shock-resistant grille withstand road wear; integrated M20 flanges and stacking recesses enable vertical or horizontal rigging. Fanless passive cooling with electronics airflow keeps thermal management silent-critical for permanent installations. Application presets for low-latency monitoring and cardioid function eliminate configuration guesswork, and the free iOS/Android app lets operators pair multiple speakers (up to two tops and four subs) and adjust settings wirelessly within seconds. Features  21” neodymium driver with 4.5” voice coil; bass reflex design, 29 Hz low end 1500 W RMS / 3000 W peak output; 136 dB max SPL (pink noise, 1 m) DSP with 24-bit/48 kHz conversion and multiband limiter Four-band parametric EQ, three crossover points, 50-metre delay adjustment; XLR inputs, XLR outputs, PowerCON loop-through connectivity Bluetooth 5.1 with app control for iOS and Android devices 18 mm birch plywood cabinet, 562 mm width, fits standard touring vans Eight ergonomic handles; M20 flanges and stacking recesses for fixed or mobile rigs