Description: r2504 : Sensitivity: 102 dB Power Handling: 150W RMS x 4 @ 4 Ohm 400 W x 4 @ 2 ohms 600W x 2 [Bridge] @ 4 Ohms THD 0.01 % Dimensions: 10-7/16" X 2-1/4" H x 12-9/32" L