Part of the XP series, the ARXP62 bookshelf speaker introduces an unprecedented combination of classic looks, innovative features and revolutionary metal alloy components. From Super Audio Tweeters with frequency response up to 50kHz, to Acoustic Research"s exclusive MagAlloy midranges, the result is solid sonic precision and unyielding tonal accuracy in any home theater or stereo configuration. Sensitivity - 88dB 8 ohms Dimensions - 13-1/4 x 7-7/8 x 12-7/8 Black ash vinyl finish