Designed for installation in factory or custom locations, the GB10 1" tweeter provides low distortion audiophile-grade performance with extended high frequency response. The unique installation kit makes beautiful custom installation a breeze and provides several options for behind-the-panel mounting in factory locations. Features: 1" (25 mm) Sealed Polyester Diaphragm 1" (25 mm) Voice Coil Neodymium Motor Chrome-Plated Cast Zinc Housing Copper Inductance- and Distortion-Reducing Pole Piece Cap Screw Terminals All-Metal Flush and Behind-the-Panel Mounting Kits Included Hex Screws and Tools Included Removable and Paintable Grille Rub-On Logos Included for Custom Installation Specs: Nominal Impedance: 4 Ohm RMS Power Handling: 100 W (with recommended crossover) Peak Power Handling: 300 W (with recommended crossover) Frequency Response (-3 dB): 1.8 kHz - 24 kHz Sensitivity (2.83V / 1M): 90 dB Recommended Amplifier RMS Power Range: 20 W - 100 W Recommended High Pass Filter Frequency and Slope: = 2.5 kHz, = 12 dB/oct