87mm/165mm 3-Way component system with Plus One® HCL™ Woofer and high-bandwidth edge-driven textile-dome Tweeter. This system features the I-Mount (patent no. 5,859,917) Tweeter-mounting system and a computer-optimized outboard passive Crossover network with Tweeter-level control.New HCL™ cone material - This breakthrough material consists of two woven-glass-fiber layers with an epoxy-coated Nomex® honeycomb core. Exceptionally stiff, yet lightweight, it offers increased efficiency, exceptional midrange clarity and lower distortion at high output levels. The P6563c's tweeter features our proprietary I-Mount™ (patent no. 5,859,917) tweeter-mounting system, which allows for precise imaging and easy installation. High-bandwidth edge-driven textile-dome tweeters - These are not commonly used miniature cone tweeters, but full edge-driven domes like those found in high-end home audio loudspeakers. The benefits of this full edge-driven topology are reduced distortion at high output levels and superior integration with the mid/woofer. Plus One® (patent pending) woofer cones - The P6563c's mid/woofer uses a cone with more surface area than that found in competing models of the same size. The benefit is increased bass output and increased efficiency. Computer-optimized voice-matched passive crossover - The P6563c comes equipped with an outboard crossover that has been voice-matched to ensure optimium imaging, clarity and detail. The crossover also features a tweeter-level control and midrange-level control, allowing for precise tuning based on the tweeter location. Oversized voice coils and spider integrated tinsel leads - The P6563c mid/woofer features a voice coil larger than that found on competing models of the same size. This larger voice coil increases power handling while minimizing distortion. The spider integrated tinsel leads greatly enhance reliability and eliminate audible tinsel-lead slap. True Four Ohms - All Power Series® speakers feature two-ohm voice coils. Original factory-installed speaker wiring in many cars is 18�22 gauge. This wire, and heating in the voice coil when power is applied, increases the impedance �seen� by the amplifier or head unit. The impedance of Power Series models has been adjusted to compensate for this increase and can be safely driven by any head unit.
