4) New BOSS CH6530 6.5" 3-Way 600W Car Audio Coaxial Speakers Stereo Red Provides 300W of MAX Power (pair)300 Watt MAX (600 Watt per 2 Pairs) and Impedance: 4 ohms Each Impedance: 4 ohms; Frequency Response: 100Hz - 18kHz; Sensitivity: 90 dB @ 1 Watt/1 Meter Features a 1 High-Temperature Aluminum Voice Coil, a 1 Polyimide Cone Midrange and a 1/2 Polyimide Cone Tweeter Constructed of a Poly-Injected Cone with a Foam Surround Mounting Depth: 2.125