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