Powerful 8" sub with 12 good reviews. You can see the specs below:
-Compact, class-leading 8" subwoofer produces precise deep bass down to 27hz!
-400 watt Amplifier (100watt RMS) precisely matched to woofer for accurate and high-impact bass
-Heavy-duty 8" Titanium-Deposited woofer & down-firing low-turbulence port
-Patented Ribbed Elliptical Surround Technology for lower distortion & greater dynamics
-Variable high-pass filter, phase switch, line-level and speaker level inputs for easy integration with any system