This is the 2000-watt active subwoofer amplifier which can create a rich sense of space and give you an immersive experience. The box is made of mdf and weighs 70.5 pounds. Even with large dynamic effect there will be no obvious resonance of the case. There is a 15-inch bass unit a 4-inch voice coil and a 1000z magnet in the box which can create a panoramic sound field atmosphere for you and fill every corner of the room with heavy voices. 400w rated high power brings you a very shocking bass effect. The peak power of 2 000 watts allows you to experience the pleasure of instantaneous high-altitude thunder explosion. If you are looking for theamplifier like that Don't hesitate to buy one1 --15 inch bass unit and 1000z magnet steel create pure bass effect --Embedded handles in ergonomics make it easier to move --Double air guide holes make airflow smoother and bass more shocking --Built-in fan radiator makes heat dissipation faster and more efficient --Simple appearance design can match a variety of decoration styles --Dsp ensures the balance between low frequency and high frequency --Suitable for all kinds of audio equipment with active output terminal