Third generation Synergy bookshelf model. Matching pair. It offers a winning combination of powerful bass with remarkable detail and high volumes with low distortion. A rear-mounted port increases efficiency and extends bass response. S p e c i f i c a t i o ns FREQUENCY RESPONSE: 62Hz - 23kHz +/-3dB POWER HANDLING: 75 w (300 w peak) SENSITIVITY: 92dB @ 2.83 volts/1 meter NOMINAL IMPEDANCE: 8 ohms CROSSOVER FREQUENCY: 2300Hz TWEETER: 0.75” (1.9cm) aluminum dome tweeter HIGH FREQUENCY HORN: 4” (10.2cm) 90 x 60 Tractrix Horn WOOFER: 5.25” (13.3cm), magnetically shielded woofer ENCLOSURE TYPE: Bass reflex via rear-firing port DIMENSIONS: 12.5” (31.8cm) x 7” (17.8cm) x 8” (20.3cm) WEIGHT: 11 lbs. (5kg)