Pioneer TS-A1684R A-Series 6 1/2" 4-Way 350 Watts (Discontinued by Manufacturer) 6 1/2" or 6 3/4" application size, contains 1 pair (2 pieces). Step-Up A-Series for better sound performance. 4-way coaxial with woofer, midrange and two tweeters. Oversized woofer cone surface for bigger base in vehicles with 6 3/4" openings. High power handling up to 350 watts.