Pioneer A-Series speakers are your ticket to a premium audio experience that won't leave your wallet feeling lighter. These speakers not only deliver better audio details with rich bass notes, louder output, and clear and balanced audio but also do it in an affordable manner. Their sound design purposefully matches the subwoofer and full-range loudspeakers to provide seamless and smooth sound characteristics with dynamic, high-impact bass that lets you hear and feel the music, all without breaking the bank. Pioneer’s OPEN & SMOOTH sound concept delivers uniform off-axis frequency response optimized for automotive applications where 1 or more speakers are often aimed away from the listeners’ ears. This provides a better audio quality that will not fade away wherever you are in the car. The TS-A1671F is a pair of 6-1/2-in. speakers. They are custom-fit for original equipment (OE) 6-1/2-in. speaker sizes and drop-in replacement installation with improved acoustic performance..