It is a single 15" three-way speakers system and used for, outdoor, meeting rooms, small outdoor performances and skating rink, common bar
Detailed introduction to TA-315 Three-way Special loudspeaker system:
SINGLE15"THREE-WAY SPEAKERS SYSTEM
Nominal power 350W(MAX/500W)
Frequency Range 40-18KHz(±3dB)
Nominal impedence 8Ω
Sensitivity 101dB/1W/1M
Drivet complement 15"+HF:D8+HF:D44
Dimensions (H x W x D)740x610x480(mm)
Box Material Plywood