Lowered - Infinity Primus P163 bookshelf speaker

The Primus P163 features Infinity's exclusive Metal Matrix Diaphragm ("MMD" for short) driver technology in both the 3/4" tweeter and 6-1/2" woofer. These MMD drivers consist of a stiff aluminum core, anodized on both sides for increased strength and rigidity. The result is extremely fast, extremely accurate response, so you'll hear distinctly cleaner, more realistic sound, even at higher volume levels. frequency response 49-20,000 Hz (±3dB) handles up to 150 watts sensitivity 90 dB 8-ohm impedance Metal Matrix Diaphragm® drivers minimize distortion 3/4" MMD dome tweeter 6-1/2" MMD woofer magnetically shielded for safe placement next to older tube TVs bass-reflex (ported) design black woodgrain vinyl finish 5-way binding posts 8-3/16"W x 14-15/16"H x 11-1/8"D weight: 16.1 lbs.