4) PIONEER TS-A1674R 6.5" 350W 3-Way 600W Car Speakers TWO Pairs of PIONEER TS-A1674R 6.5" 600 Watt 3 Way Car Speakers 300 Watt MAX (600 Watt per 4 Speakers) - 35 Watt RMS (70 Watt per 4 Speakers) Carbon Graphite IMPP Interlaced Aramid Fiber Woofer Composition 1-5/8" Midrange , 3/8" Soft Dome Tweeter Elastic Polymer Woofer Surround, Heat Resistant Voice Coil with Shallow Basket Design