Seems as thou the RK's can take more peak but less RMS, I can get either at the same price and I have a set of RK's on order already. Second pair in the rear doors or go with the CK's?
RK6 CK6
Speaker Size 6-1/2" 6-1/2"
Design 2-way Component System 2-way Component System
Shallow Mount Installation No No
Tweeter Design Dome Dome
Tweeter Composition Silk Silk
Woofer Composition Glass Fiber Woven Carbon Fiber
Woofer Surround Butyl Rubber Butyl Rubber
Peak Power Handling 500 watts 280 watts
RMS Power Handling 120 watts 130 watts
Sensitivity 90 dB 93 dB
Frequency Response 65 - 20,000 Hz 20 - 22,000 Hz
Impedance (per voice coil) 4 ohms 4 ohms
Top Mount Depth 2-15/16" 2-3/4"
Bottom-mount depth 3-5/16" 2-7/8"
Cutout Dimensions 5-3/4" 5-3/4"
Speaker Grilles Yes Yes
