The 2B is a two-way, ported design using a 6.5 in woofer and a 1 in ferrofluid-cooled aluminum domed tweeter. Frequency response is rated by the company as going from 49Hz to 21kHz +/- 3dB (measured on-axis). The speakers are shielded, so can easily be used as part of a video system. Exceptional sound offering a high level of refinement; these hard to find speakers are in near new condition; with plenty of life left in them. Measures: 12 in (D) x 8 in ((W) x 15 ½ in (H) Wt. 16.4 lbs (each) Speaker Box: Black Ash Serious inquiries only please.