| 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 JRX118SP features...
Dual inputs with balanced XLR connectors.
A built-in stereo crossover network - great for systems with EON or other powered satellite speakers.
Peak limiter that protects the amplifier and speaker from clipping.
Specifications
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) | 
