4) New BOSS Chaos CH1552 5.25" 3-Way 400 Watt Car Audio Coaxial Speakers Stereo New Boss CH1552 400 Watt 3 Way Car Speakers (4 Speakers) 200 Watt Max (400 Watt Total) Impedance: 4 ohms 100Hz-18khz Frequency Response Sensitivity: 90 dB