DS18 PRO-X 5.25" Mid-Range Speaker, 150W RMS/300W Max, 4 Ohm (Sold Each) 300 Watts Max 150 Watts RMS 4 Ohm Impedance Sensitivity: 93dB Frequency Response: 200 Hz - 16 kHz 1.2" KCCAW Voice Coil Stamped Steel Basket Paper Cone Cloth Surround Ferrite Magnets: 18.5 oz. Mount Depth: 2.6"