Designed as a dedicated midrange driver for special applications in 3-way systems, the GB25 is optimized for enclosures as small as 0.2 liters (2-1/2" x 2-1/2" x 2"). The GB25 can be installed in a tiny enclosure in a custom A-pillar or used infinite baffle in a door panel or a dashboard. Like all the GB Series midrange speakers, the GB25 includes a grille and installation kit that can be customized to blend with or highlight nearly any installation. Features: Treated Paper Cone 1" (25 mm) Voice Coil on Fiberglass Former Milled Flat Single-Layer CCAL Voice Coil Copper Inductance- and Distortion-Reducing Pole Piece Cap Neodymium Motor with Bucking Magnet Flat, Progressive Nomex® Spider Nitrile Butadiene Rubber Surround Proprietary Vented Cast Aluminum Basket Chrome-Plated Cast Zinc Motor Housing Screw Terminals All-Metal Grille and Mounting Kits Included Hex Screws and Tools Included Removable and Paintable Grille Rub-On Grille 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): 150 Hz - 16 kHz Sensitivity (2.83 V/1 M): 86 dB Recommended Amplifier RMS Power Range: 20 W - 100 W Recommended High Pass Filter Frequency and Slope: = 200 Hz, = 12 dB/oct Recommended Low Pass Filter Frequency and Slope: = 12 kHz, = 12 dB/oct