Ampex Woofer

Brand: ampex ​model: ax300bt ​system type: 2.1 channel hi-fi active subwoofer ​output power: ​subwoofer: 20w ​satellite speakers: 5w x 2 ​frequency response: ​subwoofer: 40hz - 150hz ​satellite: 150hz - 20khz ​signal-to-noise ratio (s/n): \ge 78db ​speaker units: ​subwoofer: 4-inch, 4\omega, 20w bass ​satellite: 3-inch, 4\omega, 5w full-range ​tweeter: 1.5-inch ​dimensions: ​subwoofer: w150 x d258 x h220 mm ​satellite: w90 x d65 x h150 mm ​power supply: ac 220v-240v / 50hz ​what's in the box? ​1 x main subwoofer unit ​2 x satellite speakers ​1 x wireless remote control ​1 x user manual