A:Answer The Subwoofer for the LG XBOOM Multimedia Audio System, Model # LK72 is enclosed in the same cabinet as the main unit (i.e. receiver) so shares the same power. The Auxiliary port on the unit is a standard RCA barrel port (Red/White) or 1/8" ports (3.175mm). The System has a Frequency Response of 40 to 20, 000 Hz. On average, humans have the ability to hear sounds within the range of 20 to 20,000 Hz. Subwoofers are loudspeakers built to reproduce the lowest audible frequencies. Capabilities vary between subwoofers, but generally, they are able to produce frequencies from 20 to 200 Hz. Regrettably, the specifications for the unit do not list the frequency respone for the Subwoofer, but the low end of the system's frequency response of 40 Hz will be as low as the Subwoofer goes. It will not have a frequency response as high as 20 kHz...^IFV
