FY203 speaker : Output max: 60w speaker impengang:8 ohm Frequency Range:100HZ-20KHZ Sensitivity1w-1m:88db pack Dimensionns:140*210*120 FY201 speaker :speaker Output max: 80w speaker impengang:8 ohm Frequency Range:80HZ-20KHZ Sensitivity1w-1m:88db pack Dimensionns:180*167*245