• Tweeter: 1" (25mm) silk dome, ferrofluid cooled, pivoting, in acoustic back chamber • Woofer: 6 1/2" (165mm) coated carbon fiber cone with a rubber surround, pivoting • Frequency Response: 43Hz - 20kHz ±3dB • Impedance: 8 ohms nominal; 6 ohms minimum • Power Handling: 5 watts minimum; 135 watts maximum • Sensitivity: 90dB (2.83V/1 meter) • Grille: Perforated aluminum • Adjustments: Tweeter level ±3dB • Dimensions: (Diameter x Depth) 9 3/4" x 4 3/4" (248mm x 121mm) • Cut-Out Dimensions: (Diameter) 8 1/4" (210mm)