Including 4 speakers,1 set 2000w amplifier,can be used in city,diggings,mountainous area....
long distance transmisson.
Power: 500w(125w*4) *4
Sound Pressure:99D(500W/125M)
Renewable Audio:180-7500Hz(-20DdB)
Diffusion Angle:125°*60°
Meterial:Glass-reinforced plastic shell