Used pair of Klipsch Synergy B3 speakers. I'm the original owner. Well treated non smoking home. I'm upgrading. 6.5-inch IMG woofer1-inch aluminum-dome compression driverExclusive square Tractrix® HornAvailable in a black finish with titanium accents This third generation Synergy bookshelf model benefits from more than 55 years of Klipsch engineering experience and aesthetic upgrades that are representative of a new quality of craftsmanship. It offers a winning combination of powerful bass with remarkable detail and high volumes with low distortion making it a perfect delivery source for today's advanced digital music formats. The B-3 gets its performance thrills by employing a 6.5-inch IMG woofer and 1-inch aluminum-dome compression driver coupled to an exclusive square Tractrix® Horn. It also features a rear-mounted port that increases efficiency and extends bass response. Available in a black finish with titanium accents the contemporary look of the B-3 is two-fold. With its grille on the B3 offers a sense of elegance that nicely blends in with your home décor but take the grille off and you get an aggressive and powerful statement that exudes extreme performance. The Synergy Series B-3 is a stylish and high-performance choice for the discerning audiophile who requires towering achievement in a bookshelf design. Specifications FREQUENCY RESPONSE 55Hz - 23kHz +/-3dB POWER HANDLING 85 w (340 w peak) SENSITIVITY 93.5dB @ 2.83 volts/1 meter NOMINAL IMPEDANCE 8 ohms CROSSOVER FREQUENCY 2050Hz TWEETER 1” (2.5cm) aluminum dome tweeter HIGH FREQUENCY HORN 5” (12.7cm) 90 x 60 Tractrix Horn WOOFER 6.5” (16.5cm), magnetically shielded woofer ENCLOSURE TYPE Bass reflex via rear-firing port DIMENSIONS 15” (38.1cm) x 7.8” (19.8cm) x 9.75” (24.8cm) MOUNTING None WEIGHT 16 lbs. (7.3kg)