Accurate High-Performance SoundNew Reference speakers are designed to deliver Infinitys signature sound in more vehicles. They feature edge-driven textile tweeters for smooth clear highs and the larger models offer an adjustable tweeter output level control for high-frequency optimization based on installation location or the listener's preference. Oversized Plus One woofers offer more surface area for higher bass output and enhanced midrange performance. Plus Infinitys newly engineered baskets are optimized to fit most factory speaker locations. Available in a range of standard sizes - 3-1/2" 4" 5-1/4" 6-1/2" 6" x 8" and 4" x 6" coaxial 6" x 9" 3-way and 5-1/4" 6-1/2" and 6" x 9" component - theyre the perfect upgrade from factory speakers.Features•Edge-Driven Textile Tweeters•Adjustable Tweeter Output Level•Plus One Woofer Cone Architecture•Optimized Frame SizeEdge-Driven Textile TweetersThe audiophile-grade tweeters used in Infinity's new Reference speakers deliver smooth non-fatiguing sound even at high output levels.Adjustable Tweeter Output LevelThe larger Reference multielement and component systems offer a tweeter output level control to optimize system linearity to suit installation location or the listener's preference.Plus One Woofer Cone ArchitectureHarmans patented (US patent #7548631) Plus One cones provide more overall speaker-cone area than other cones in its class - the result is higher sensitivity increased low-frequency output and accurate music reproduction.Optimized Frame SizeReference speakers are available in a range of standard sizes and feature a compact design that allows them to fit just about any vehicle on the road today.What's in the Box•REF507CF 5.25 Inch 2 Way Component Car Speaker System•(2) Woofers•(2) Tweeters•(2) Crossovers•(2) Tweeter Surface Mount Accessories•(2) Tweeter Flush Mount Accessories•(2) Tweeter Nuts•(2) Tweeter Flat Washers•(6) Tweeter Mounting Screws•(8) Woofer Mounting Screws•(8) Crossover Mounting Screws•(8) Speed Clips•Foam Mounting Tape•Owners ManualSpecifications•Power handling 65W RMS 195W peak•Sensitivity (@ 2.83V) 93dB•Frequency response 67Hz 21kHz•Impedance 3.0 ohms