The machinefit the place such as HI house, performing hall, song dance hall .
It asole fit to perform  in the open air.The professional designed  makes the
low sound more powerful and clearer.

(1)Subwoofer speaker was phase inversion designed elaborately by acoustician ,
  its low frequency can be extend to 40HZ.
(2)The frame which is made of  high density mid-fiberboard is  burly and Enduring.
(3)Using high quality low frequency speaker, the bass is more powerful.
(4)The product fit  big or middle stage hall, night club, gymnasium, deluxe Hi house
  and so on.
(5)The factory  produce other two type professional bass cannon amplifier without
  power supply, the effect will be better as cooperate with them.

specifications
   output power 150W（4Ω）
   Frequency Response 40Hz-250KHz
   Speaker sensitivity 90dB
   Impedance 4-8Ω
   Modality 12inch subwoofer
   Dimensions(cm) 55x38x43