25 cm subwoofer / 10 inch subwoofer 100 watts RMS / 300 watts PEAK Subwoofer size (in, mm) 10, 25.4 Max. Recommended Amplifier Power (Watt Peak)300 Max. Recommended Amplifier Power (Watt RMS) 100 Frequency response (Hz) 300 - 1000 Mounting Depth (in, mm) 4 11/16" (11.9) Hole cut-out diameter (in, mm) 9 1/4 (23.5)