The HELIX COMPOSE CB C100.2-S3 is a 4 inch 2-way coaxial speaker system engineered to combine universal fit with vehicle-oriented design for efficient, dynamic sound reproduction. It uses a lightweight polypropylene midrange with a ventilated steel basket and soft polyurethane dustcap plus a 20 mm coated silk dome tweeter driven by a neodymium magnet and an integrated 6 dB crossover; the 3 Ohm topology enhances amplifier power transfer while the compact size supports installation in constrained factory openings.