Pioneer's G-Series 6 in. x 9 in. 400-Watt 3-Way Coaxial Speakers are an excellent, entry-level choice to replace a bad set of factory 6 in. x 9 in. speakers. They feature Pioneer’s extremely strong and lightweight Injected Molded Polypropylene (IMPP) with MICA composite cone woofers for improved sensitivity and reduced distortion. This pair of speakers comes with full mesh grilles..