Type: Home Theater Speaker System Speakers Configuration: Center Speaker x 1 Satellite Speaker x 4 Subwoofer x 1 Driver Units: Center Speaker: Two 3-1/4" BDSS bass/ midrange drivers coupled to two 3-1/4"bass radiators, one 1" Pure Aluminum dome tweeter Satellite Speaker: One 3-1/4" bass/midrange driver coupled to one 3-1/4" pressure-driven planar mid/bass radiator. One 1" pure aluminum dome tweeter Subwoofer: One 8" woofer with polymer cone, one 8" low bass radiator Power Rating: Recommended Amplification: 10 – 150 watts/channel Frequency Response: Center Speaker: 55 Hz – 30 kHz Satellite Speaker: 65 Hz – 30 kHz Subwoofer: 22 Hz – 150 Hz Nominal Impedance: 8 Ohms Sensitivity: Center Speaker: 89dB Satellite Speaker: 88dB Remote Control: No