JRX118s Bass Bins By JBL, The JRX118S is driven by a massive JBL 18' woofer with a cast frame and 3' voice-coil. It's rated at 350 watts (continuous) and 1400 watts (peak) - and that's based on JBL Professional's 100 hour torture test.

Specifications

Frequency Range (-10 dB):38 Hz - 300 Hz
Frequency Response (±3 dB):55 Hz - 300 Hz
Sensitivity : 96 dB SPL
Nominal Impedence:4 ohms
*Power Capacity:350 watts
*Peak Power Capacity:1400 watts
Recommended Amplifier Power:350 watts to 700 watts into 4 ohms
Recommended Crossover Settings:30 Hz HPF, 24 dB / octave; 80 - 100 Hz LPF, 24 dB / octave
Maximum SPL: 127 dB
Dimensions (H x W x D): 597 mm x 516 mm x 559 mm
Weight:32.2 kg
Low Frequency Driver:JBL 2043-G
Input Connectors: Neutrik(r) Speakon(r) NL-4 (x2); 1/4' TS phone jack (x1); parallel

* 'Power Capacity' and 'Peak Power Capacity' ratings are based on the
average and peak power capacity of product samples subjected to a 100
hour power test using random noise with a 6 dB crest factor, in accordance
with IEC standards.