FPS 0202N3R2 1-3/4 x 2-1/8 Flat Panel MCMA Planar Speaker 8 Ohm 6W Unique MCMA construction places the voice coil in the diaphragm for immediate transient response Extremely small design (less than 1/2&quot; thick) with full range output from 170 to 20,000 Hz Perfect for space-limited applications Planar wave launch for focused output that travels further than a radial wave launch of a conventional speaker Great for building super slim column line array speakers