Full specifications: Response on axis ±3db: 68-21,000Hz Response on axis ±1.5db: 72-20,000Hz Response off axis (@30º) ±1.5db: 72-10,000Hz LF Cutoff -10db: 55Hz Sensitivity: 90dB Impedance: 8Ω Recommended input power: 10-150 Watts Tweeter: 1/2" poly-flare dome with Ferrofluid Woofer: 2x 5-1/4" Polypropylene Rubber Surround Crossover: 2,800Hz, B3 Design type: Ported Bass Reflex Shielded Internal volume: 0.48 cu ft (13.6 liter) Size: 19.25 x 6.5 x 10 inches (489 x 166 x 254mm) Weight: 18 lb Finish: Ebony Ash 5-way gold plated binding posts In excellent condition