Product Name: B-40 Speaker system: 5.1 channel, black-gray enclosures Configuration: 5 satellite speakers (two front speakers, 2 rear speakers, a center speaker), a subwoofer Against infection from a Input signal: 2.1 or 5.1 Output signal: Push Terminal 2.1/5.1 compatible input: Auto 2.1/5.1 2.1 to 5.1 emulator Adjust the sound: Volume, Bass, F.Vol, C.Vol, S.Vol The total capacity 115W (RMS) · Subwoofer: 6.5 "- 40W (RMS). · Satellite speaker: 3 "+ 1.5" - 15W (RMS) X 5 Frequency Response · Subwoofer: 20Hz-200Hz. · Satellite Speakers: 200Hz ~ 20KHz. Noise Ratio S / N:> 75dB Karaoke function FM Using the computer: a Use for DVD, VCD, CD: there Indicator lights power levels: a Speaker Color: Black Brackets for Surround Remote control: yes Dimensions (WxDxH, mm) · Satellite Speaker: 85 x 100 x 120 (mm). · Center speaker: 250 x 75 x 95 (mm). · Subwoofer: 165 x 310 x 310 (mm). Source: Nguon220V ~ 50Hz