The Pioneer TS-W29C 10 subwoofer is a powerful car audio speaker with a 4 ohm impedance and up to 450W of peak power output. Designed by Pioneer, this non-enclosed and non-powered subwoofer features a single voice coil and a 10-inch speaker size, making it ideal for enhancing the bass in your car audio system. With an RMS power of 120W, this model offers a high-quality audio experience for car audio enthusiasts looking to add depth and impact to their listening experience on the road.