BASIC CONFIGURATION12JBL PROFESSIONALNorthridge, CA USAMade in USASerial No.IN / OUTIN / OUTMP4xx±1 FULL RANGE±2 THRUImpedance: 8ΩJBL PROFESSIONALNorthridge, CA USAMade in USASerial No.IN / OUTIN / OUTMP4xx±1 FULL RANGE±2 THRUImpedance: 8ΩMP410, MP412 and MP415 MP410, MP412 and MP415