Yamaha DXS18XLF, Active Subwoofer, Equipped with: 18"" With 4"" coil, Maximum level: 136 dB, Frequency range: 30 - 150 Hz, Ideal for today's sound engineering needs, High-performance 1,600 W Class-D amplifier module, 96 kHz DSP for true hi-resolution sound with extremely low latency, Access many DSP functions and presets, Alternatively, precisely adjusting the PEQ, delay and routing, etc. are possible via the intuitive LCD display, Equipped with D-XSUB processing and cardioid mode compatibility, Lightweight but durable wooden case with premium polyurea coating, Dimensions (W x H x D): 550 x 657 (with rubber feet) x 720 mm, Weight: 48.9 kg, Suitable protective cover: Article no. #473032# (not included)