1.It used high density MDF and spray paint for case body.
2、The loudspeaker is maded by our factory, it is guaranteed for 3 years.
  It is used big power output and  highly rigid body cone. The bass is
  powerful and the intermediate frequency is very magnetic.
3.This speaker is well suited for nightclub,multi-function room and outdoor
  theater.

Suggestion：
Amplifier:
       1.OK-K560 PO-680 OK-K580 
       2.PS-1800 PV-1800 + Mixer console

Specifications:
   Frequency Response 45Hz-20KHz
   Components bass-15"x2(Y15-4、Y15-8）  high-YM44.4-8T02x1 (H45A1)
   Impedance 4Ω
   Peak Power 1200W
   Sensitivity 100dB
   Dimensions(cm) 47x51x122