4) Lanzar OPTI10MI 10" 4000 Watt 4-Ohm High Power Mid Bass Car Audio Speakers 4) New Lanzar OPTI10MI 10" 4000 Watt 4 Ohm High Power Mid Bass Car Audio Speakers (4 pack) 1000 Watts (4000W per 4 pack) 10'' Paper Cone with Cloth Surround Note: This is a MID Bass Speaker. This is not a Subwoofer. This is meant to hit mid notes and will not hit notes lower than 60 Hz. Die Cast Aluminum Frame