... Ω Center:4Ω Surround:4Ω• Driving unit• Front/Centre/surround: 3" x 1• woofer:6.5"×1• Frequency range• Front/Center/surround ... FM/USB/SD card reader, • Full function remote control 3 DVD player:• USM(Virtual Sound Matrix)• USB direct (MP3,WMA,GPEG ... product)• Multiple playback•Plays DVD-Video, +/-R, DVD+/- RW,Audio CD,CD-R, CD-RW• Audio CD,CD-R, CD-RW• MP3,WMA,JPEG• Semi ...