Keep on question for the true sound

Specifications

15Inch Active Subwoofer System
Amplifier
Maximum Output Power:500W/4Ω
Frequency Response:20Hz-150Hz
Cut-off frequency Control:50Hz-150Hz
Phase control:0-180°
Speaker
Woofer:15inch Cone Type
Power Supply, Others
Power Voltage:220V-240V
Power Consumption:800W
Dimensions(W X H X D)：530x575x455mm
Weight：39.7Kg