JBL SUB180 Premium 5.1 Home Theater System for Sale. This system surpasses all expectations for sound quality in a small package. The four satellite and the single center speakers each use a 3" polypropylene mid-range driver and a 1/2" titanium-laminate dome tweeter. They can handle up to 100 watts RMS and have an impedance of 8Ω. The subwoofer weighs about 35 lbs. It features four large rubber feet, which keep the downward firing driver off the floor. It includes line, LFE, and speaker level stereo inputs, so it can be used with any amplifier. A phase control switch on the back allows you to adjust the phase of the subwoofer in relation to the rest of the system. The powered subwoofer features a 10" downward firing woofer driven by a 150 watt amplifier. It can handle frequencies from 30Hz to 150Hz (-10dB) and uses a variable crossover from 40-150Hz. Used, but in great condition. Below is info from the manufacture… Upgrade your home theater to the max with this JBL 6-piece surround sound system that brings you astonishing fidelity and earth-shaking bass. Five identical 2-way satellite speakers and horizontal center-channel speaker each have 100W power-handling capacity. The 10" 150W (RMS) powered subwoofer in bass-reflex enclosure with a front-firing 6” port. Features: • Power-handling capacity (satellites and center-channel): 100W RMS (continuous) per channel @ 8 ohms • Satellites & center-channel dimensions: 3-1/2" x 3-7/8" x 8-1/8" tall • Each 2-way satellite speaker & center-channel speaker features dual 3" midrange drivers and 1/2" titanium-laminate dome tweeter for more sound power and realism • Front center-channel speaker also features dual 3" midwoofers for enhanced dialogue clarity • Satellites & center-channel weight: 2.65 lb each • System frequency response: 30Hz - 20kHz (-6dB) • Sensitivity (satellites and center-channel): 88dB • Impedance: 8 ohms • 10" bass-reflex subwoofer delivers 150W RMS (continuous) for thunderous bass performance • Subwoofer dimensions: 15-3/4" x 16-3/4" x 17-3/4" tall • Subwoofer weight: 35 lbs.