... Speaker, Subwoofer, MP3 Speaker, Multimedia Speaker, Speaker Box, Loudspeaker, Sound Box, usb speaker,PA speaker, portable speaker,Speaker System, Active ... class bass output. 2.1 Channel SoundIncluded 2 Satellite Speakers to Handle higher frequency and 1 Sub-woofer for lower ... enhance quality of Bass. Item NO: YM-JX959 sound boxMaterial: WoodenPower: 50W Speakers Unit: 3"Midrangex2PC+4"Impedance:4Ω S/N ...