The T1693 is a top-of-the-line full-range car speaker system, and the only 3-way model, from Rockford Fosgate. Part of the manufacturer's "Power" series, each speaker utilizes 6"x9" mid-range driver and two tweeters (1" and 1/2"), providing 100W of RMS output power and a better bass response than most other models, with a 50Hz-22kHz frequency response range.