RMS: Woofer: 40W Satellite: 5 x 15W Frequency response: 30Hz - 20KHz Channel crosstalk: >50dB S/N ratio: > 70dB Speaker system: 6.5" woofer on main unit 1 x 3" tweeter+2 x 3" drivers on front satellite units 1 x 1.5" tweeter+1 x 3" drivers on rear satellite units 1 x 1.5" tweeter+2 x 3" drivers on centre satellite units Product size Subwoofer: W200 x H330 x D334mm Satellite speaker: W130 x H195 x D135mm Rear speaker: W105 x H805 x D112mm CEN: W355 x H105 x D112mm FM tuner general specifications: Frequency range: 87.00MHz-108.00MHz Step frequency: 50/100KHz Intermediate frequency: 10.7MHz (upper heterodyne) Operating temperature: -5 to +70 deg. C ANT input impedance: 75 unbalanced AM tuner general specifications Frequency range: 522KHz-161KHz Step frequency: 9/10KHz Intermediate frequency :450KHz (upper heterodyne) Operating temperature: -5 to +70 deg. C S/N (PSOPHOA): >= 45dB