Pioneer's goal is to build speakers that accurately cover the whole frequency spectrum highs, mids, and lows. The TS-A4670R 3-way 4"x6" speakers start with 3/8" PET silver film dome tweeters and 1" pearl polycarbon midranges, for stellar coverage of the highs and mids.
The Aramid fiber-reinforced IMPP (Injection Molded Polypropylene) woofers deliver eye-opening bass response for speakers of this size. These versatile 4"x6" speakers are equally at home in standard or metric openings. Grilles are not included factory grilles are appropriate for most installations.