MB Quart FKA 157 5" x 7" 2-way Formula Series Speakers (Pair) FKA157 5" x 7" Formula Series Car Speakers Peak: 300 watts per pair / 150 watts each | RMS: 80 watts per pair / 40 watts each Frequency Response: 55 - 32000 Hz Impedance: 4 ohms Top Mount Depth: 2.4"