Subwoofer-Speaker Motors create the magnetic field that drives cone motion. Each assembly includes ferrite magnets, top and back plates, and a pole piece. We deliver every motor fully assembled and charged, ready to install. Motor ratings in ounces (oz) describe ferrite weight only — not the entire assembly. Some companies inflate ratings by adding the steel structure, misleading buyers. Ferrite weight offers a basic comparison, but actual motor strength depends on ferrite grade, plate thickness, and gap geometry. Our motors maintain precise coil gap alignment, improve heat control, and ensure long-term reliability. Choose the correct motor to match your basket, spider, and coil, and you’ll achieve the performance needed for high-output or SPL builds.