A superb quality two-way passive magnetically shielded speaker with twin 7-inch glass fiber woofers and an 1-inch Neodymium Ring Radiator Tweeter . One of the best speakers in the world regardless of price, product of the year in the Stereophile magazine. Features : One 1" (25mm) Neodymium Ring Radiator tweeter Two 7" (18cm) Glass Fiber Mid-Woofers in MTM configuration Frequency response: 56Hz-20kHz ±1dB (31Hz-40kHz ±3dB) SPL: 90 dB 1W/1m Impedance: 4 Ohms Dimensions: 23.6" H x 9.4" W x 12.4" D (60cm x 24cm x 32.5cm) Weight: 41 lbs (18.5 kg) * Price for 1 speaker