Boss Audio SK552 Phantom Skull 5-1/2" 2-Way Speakers: * Power Handling, Peak: 250W * Impedance: 4 ohms * Frequency response: 85Hz-20kHz * Sensitivity: 90dB * Voice Coil: 1" aluminum * Cone Material: Poly injection * Eyes light up when speaker volume is on * Mounting Depth: 2-15/16" * Midrange: 1" Mylar dome