Behringer B1800XP, Active Subwoofer, Eurolive series, Size: 18"", Power: 3000 W, Class-D digital amplifier, Integrated peak limiter, Frequency range: 40 - 150 Hz, Maximum output level: 129 dB, Internal crossover for mid / high speaker, Tunable and switchable bass boost with phase switch for an ultra deep bass, Adjustable high-cut, Adjustable sub-volume, Power-, signal- and clip LEDs, Pole mount, 2 Handles, Dimensions: 704 x 549 x 554 mm, Weight: 44.9 kg