This speaker system features four satellite speakers and a center channel speaker for the mid- and high-range audio signals, plus an 8 inch powered subwoofer to handle the low frequencies. All the speakers come with an attractive black finish and convenient spring-loaded signal connectors. The center speakers use two 3 inch shielded mid-range cones, while the satellites employ one 3 inch cone and a 1/2 inch dome tweeter. However, don't let the small size fool you! These 8ohm speakers will handle up to 125 watts of power from your home theater receiver at frequencies from 150Hz to 20kHz. The subwoofer is powered by a 60 watt (RMS) amplifier, driving a downward firing 8 inch cone. It can take either line or speaker-level inputs, so can be used with any amplifier, even older amps without dedicated subwoofer outputs. The subwoofer handles frequencies between 50Hz to 250Hz and includes adjustable crossover frequency and volume balance controls. Also included in the box are four C brackets