The Pioneer PRO Shuriken series TS-M1610PRO Midrange Driver is a 16.5cm high efficiency speaker featuring a thick steel woofer basket design with a light weight yet rigid pulp cone, a large ferrite magnet and power motor assembly, a Copper Clad Aluminium Wire (CCAW) and an OFC short ring to reduce distortion and expand the wide range of crisp, loud and clear frequencies.