Product Highlights: frequency response: 33-40,000 Hz sensitivity: 89 dB 8-ohm impedance handles up to 150 watts 1\ Terylene high-res dome tweeter dual 5-1/4\ mica-reinforced polypropylene Dynamic Balance cone drivers Power Port technology for better bass response non-resonant MDF cabinet dual 5-way gold-plated binding posts anti-diffraction magnetic grilles for minimal sonic interference includes stabilizing feet 7-1/2\W x 37-7/16\H x 11-1/16\D (10-5/16\W with feet) weight: 32 lbs.