MP410 , MP412 , MP415MPRO 400 SERIES BLOCK DIAGRAMS10MP418SLPFSonicGuard™HPF1+1-++2+2-1+1-2+2-JBL PROFESSIONALNorthridge, CA USAMade in USASerial No.IN / OUTIN / OUTMP4xx±1 FULL RANGE±2 THRUImpedance: 8Ω+1+1-2+2-1+1-2+2-1+1-2+2-JBL PROFESSIONALNorthridge, CA USAMade in USASerial No.IN / OUTIN / OUTMP418SFACTORY±1 INPUT±2 THRUCUSTOM±1 THRU±2 INPUTImpedance: 4Ω 1+1-2+2-InputPanel(Rear View)