Hertz One Pair of MP-1653 Millie Pro 6.5" Mid-Bass Component Woofer - This bundle includes 2 Hertz Mille Pro Series MP-1653 PRO Woofers, a pry kit, and a Creative Audio coozy. Hertz Mille Pro Series MP-1653 PRO Woofer (Single) Thanks to the V-cone and Boundary Free Surround technologies the MP 165.3 car audio woofers boast outstanding dispersion features and generates high SPL with compact dimensions, ensuring a wide low frequency response, even in cars with no space for a subwoofer. Features - Pure copper voice coil wound on a Polyamide former for high power handling combined with very low intermodulation distortion of vocals. Exponential V-cone profile pressed-pulp cone with cotton fibers, combining stiffness and lightweight for a wide frequency response. Cone profile geometrically optimized for utmost linearity and dispersion in the mid frequency range. “Boundary Free” rubber surround, for improved efficiency and wider mid-bass frequency. 4. High density flux ferrite magnet combined with very low carbon content iron plates, for low distortion at high power levels. Low mounting depth, acoustically transparent aluminum alloy basket with elegant diamond cutting and featuring the aluminum Hertz logo. Optional full protection metal mesh grill featuring the aluminum Hertz logo and attractive look mineral powder coated inner grill are included for several install combinations. Specifications - Size mm (in.): 165 (6.5) Power Handling - Peak W: 180 Power Handling - Continuous W: 90 Impedance Ω: 4 Frequency response Hz: 40 ÷ 5k Sensitivity dB SPL: 93 Voice coil Ø mm (in.): 25 (1)