The Boss CH4220 speakers each deliver 200 watts at max power, providing deep bass and loud crisp sound without any distortion. Each speaker features a red poly injected, 1 inch cone, with foam surrounding and a 1 inch, High-Temperature, Aluminum Voice coil. They each have 100 watts RMS power for loud clear audio, plus they have a mounting depth just over 1 1/2 inches. - Sensitivity: 90 dB at 1 Watt/1 Meter - Poly-Injected Cone with Foam Surround - 1" High-Temperature Aluminum Voice Coil1 Buy = 2 Speakers | Boss Audio | | BOSS CH4220 4" 200W 2-Way Car Audio Coaxial Speakers Stereo Red PAIR | Black | Best Buy