Micca COVO-S Compact 2-Way Bookshelf Speakers Patented concentric driver design delivers common acoustical center point and maintains coherency through crossover region 3-Inch wool paper cone woofer with waveguide cone design for improved tweeter dispersion 0.75-Inch PEI dome tweeter for crystal clear treble and accurate imaging Ported enclosure delivers extended bass response with low distortion 6dB/octave crossover at 3.2kHz makes for a smooth transition between the woofer and the tweeter