Available at Amazon, Polk Audio RM705 5.1 6 Piece Home Theater System features 4 RM7 satellite speakers, 1 RM7 center speaker, 1 8" powered downward firing subwoofer, 40Hz-22kHz output frequency, magnetic shielding to protect TV's and monitors, 89 dB efficiency, 20-100 Watt per channel recommended power, 8 Ohms impedance.
