  JBL JRX118SP
Powered 18 inch Portable Subwoofer, If the convenience of a self-powered subwoofer is preferred, JBL offers the JRX118SP, which incorporates a specially designed amplifier with 500 watts peak and 300 watts continuous power output into the same driver as the non-powered version. It offers dual inputs with balanced XLR connectors, a built-in stereo crossover network and peak limiter to protect the amplifier and speaker from clipping.
A sophisticated, advanced network topology design is utilized in JRX100 models to ensure quality performance. To minimize distortion due to coil saturation, heavy gauge wire is used for inductors and SonicGuard™ high-frequency driver protection guards against damage caused by inadvertent overpowering of the system. All full-range models feature Neutrik® Speakon® and ¼" input connectors.
All JRX100 series models are constructed of carpet-covered, ¾" MDF - a material that is structurally and acoustically superior to the particleboard that is used by many competitive products. To ensure durability, JBL constructs these enclosures with advanced adhesives and closely mechanically spaced fasteners, while competitive systems typically rely on glue. Non-resonant, all metal handles are used and an 18 gauge, full metal grille protects the drivers. All JRX100 models have passed the same 100-hour, full rated-power torture test that JBL high-end touring systems must survive.
Frequency Range (-10 dB): 38 Hz - 300 Hz,
Frequency Response (±3 dB): 55 Hz - 300 Hz,
Amplifier Power : Peak: 500 watts: Continuous: 300 watts with <0.2% THD,
Maximum SPL: 123 dB,
Dimensions (H x W x D): 597 mm x 516 mm x 597 mm (23.5 in x 20.3 in x 23.5 in),
Weight: 40.4 kg (89 lbs),
Low Frequency Driver: JBL 2043-G,
Input Connectors: XLR/M (x2) (line level, balanced): ¼" TS phone jack (x1) (speaker level),
Output Connectors: XLR/F (x2) (Selectable, Thru or High Pass).
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