The SPR60 Type R coaxial models feature a 1" swivel ring tweeter to improve off-axis response in less than ideal installation locations. Experience greater detail and impact of your music with the hybrid layered-pulp with mica coating woofer cone. The High-performance Linear Drive Motor structure has a large magnet that is almost as big as the voice coil diameter. Its dual radial magnet and twin gap combined with a square, edge-wound voice coil gives the diaphragm linear movement over a much greater range. This is a 300W Power Handling, 4 Ohm Speaker.