Adds high-output, high-impact bass response to EV's TX2152 and comparable loudspeaker systems. It can move tremendous amounts of air thanks to dual EVS-18S high-excursion woofers, a well-braced enclosure, and a low-distortion port design. Woofers feature 4-layer voice coils and cast frames for high power handling and maximum durability. Designed to be used with a processor and a dedicated amplifier channel in a bi-amp configuration. 1000W continuous 4000W peak power handling. Frequency response: 50Hz - 160Hz. * Dual 18" Direct-Radiating * Dual EVS-18S 18" (457mm) LF transducers * 103dB sensitivity, 138dB maximum SPL * 1000W continuous, 4000W peak power handling * 4 integrated handles for easy portability * Mounting points to attach optional TX-W1 wheel kit Electro-Voice TX2181 Tour-X Dual 18" Subwoofer The Electro-Voice TX2181 is a dual subwoofer system that is designed to add high-output, high-impact bass response to the TX2152 loudspeaker system. It can move tremendous amounts of air, thanks to dual EVS-18S high excursion woofers, a well braced enclosure, and a low distortion port design. The EVS-18S woofers feature a 4-layer voice coils and cast frames for high power handling and maximum durability. The TX2181 is designed to be used with a processor and a dedicated amplifier channel in a bi-amp configuration. It has many features that make it a versatile subwoofer system. The enclosure is constructed out of a combination of MDF and plywood, and coated with EVCoat for maximum strength and durability. The unique grille design is very strong, dent resistant, and features a rotatable logo. Four way handles allow for gripping in a variety of positions. The recessed input panel with dual NL4 connectors keep the connectors hidden and allows for closer placement to a wall or other boundary. It is the same width and height as the TX2152, providing a single column appearance when stacked, and uses the minimum amount of space when stored or transported. Mounting points on the rear of the enclosure allow the optional TX-W1 wheel kit to be attached for easy portability. * Freq. response (-3 dB): 50Hz - 160Hz * Freq. range (-10 dB): 40Hz - 1.5kHz * Rec. low pass frequency: 80Hz - 120Hz * Axial sensitivity: 103dB (1W/1m) * Max. calculated SPL1: 138dB * Horizontal coverage: Omnidirectional * Vertical coverage: Omnidirectional * Power handling: 1000W continuous, 4000W peak * LF transducers: (2) EVS-18S, 18" (457mm) drivers * Nominal impedance: 4 Ohms * Minimum impedance: 2.9 Ohms * Connectors: (2) Neutrik Speakon NL4's * Enclosure material: plywood and MDF with EVCoat * Grille: 16 GA steel, black powdercoat, with rotatable logo * Dimensions (H x W x D): 45.4" x 20.0" x 27.2" (1154mm x 508mm x 691mm) * Net weight: 123.5 lbs (56.1 kg) * Shipping weight: 139.0 lbs (63.1 kg)