PROFESSIONAL SPEAKER BOX; JBL SIMILAR 15"2WAYSPEAKERBOX PASSIVE Speaker: Subwoofer Magnet 60oz VoiceCoil3"KSV FrequencyResponse 40HZ-18KHZ(-10dB) Sensitivity 98dB(+/-2dB) Impedance 8Ohm RMSPowerPASSIVE200W / ACTIVE 180W Tweeter 44mmTi.Diap.Driver 20oz,8Ohm SpecialdesignBlueLEDindicatoronfrontpanel ACTIVE Speaker: Amplifier(A)PP-2415A Impedance4Ohm Voltage115-230V/AC/60-50HZ RMSPower180W Amplifier(B)PP-2415AU SpecialfunctionUSBSLOTANDLCDSCREEN Amplifier(C)PP-2415AUES SpecialfunctionUSB/SDSLOT,LCDSCREENANDEQ