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JBL JRX118SP Active 18" Compact Subwoofer - Powered For those who prefer the simplicity of a self-powered subwoofer, there's the JRX118SP. JBL started with the same woofer used in the non-powered JRX118S and added a specially designed amplifier with 500 watts (peak) and 300 watts (continuous) power output. The JBL JRX118SP is an Active 18" Subwoofer powered by an internal 300-watt amplifier that effectively increases the low-frequency response and efficiency of existing full-range powered sound systems. Durable and reliable, the JBL JRX118SP is a convenient solution for both gigging musicians and commercial/institutional environments needing the flexibility and performance of a powerful mobile sound system.
Specifications: Active or Passive | Active |  | Frequency Range | 38Hz-300Hz | | Power Capacity | 300-Watts continuous
500-Watts peak | | Maximum Sound Pressure Level (SPL) | Not applicable | | Sensitivity | 0.5 Vrms for 300-watt output | | Impedance | 4 ohms | | Crossover | LPF: 100Hz, 24dB/Oct | | Driver | 18" Woofer | | Enclosure Material | 3/4" MDF | | Termination | (2) Balanced XLR
(1) 1/4" phone | | Dimensions | 23.8 x 20.0 x 23.3" (605 x 508 x 592mm) (H x W x D) | | Weight | 89 lbs. (45 kg) | | 
