Quick Overview The Champion Series subwoofers have evolved from Pioneer’s award-winning “SPL Champion Edition” lineup, known for its deep and powerful bass production. The TS-A301S4 12” dual-voice coil subwoofer features a redesigned large and powerful 90 oz double-stack magnet for improved efficiency and sensitivity. The subwoofer baskets are optimized with a reinforced structure design for added strength and reduced vibration, delivering excellent sound quality. This subwoofer has a continuous power of 500 watts with a maximum peak of 1,600 watts. It features an advanced 2-piece cone designed with a highly rigid and durable Honeycomb IMPP™ composite cone structure, plus a rigid drive cone to deliver high output levels with reduced distortion.