- 4 x 6 2-Way Speakers (pair) - Polypropylene Woofer Cone with Polyurethane Surround - 60 Watts Peak Power - 30 Watts RMS - PEI Dome Tweeter - Sensitivity: 86 dB - Frequency Response: 125Hz - 20kHz - Top-Mount Depth: 2-1/8 The Memphis Audio PRX46 speakers deliver outstanding sound and quality, and are an excellent choice to replace factory 4x6 speakers. Their two-way design handles 60 watts maximum power and features polypropylene cones.