* Stamped Steel Vented Air Flow Basket Frame * Mica-injected Reinforced Polypropylene Cone with Oversized Rubber Surround * Linear Woven Treated Red Spider * Power Handling: 35W / 250W. * Woofer / Tweeter (in.,mm) 5.25" (133.35mm)/1.0 (25.4mm). * Mounting Diameter: 4.409" (112mm). * Mounting Depth: 1.850" (47mm). * Frequency Response: 75Hz-18Khz +/-3dB. * Sensitivity: 93dB. * Vent Dimensions: Mica-in jected Polypropylene Cone.