Kicker 07DS400 4-Inch 100mm Coax Speakers (Pair)
Amazon.com Product Description Great sounding, easy-to-install midrange and highs make all the difference in your audio system. DS-Series Coaxial Speakers and 3-Way System provide the cost-effective ammo to keep up with your bass upgrade.DS-Series Coaxial Speakers provide the cost-effective ammo to keep up with your bass upgrade.A breeze to install.Click to enlarge.Polypropylene cone with UV-treated ribbed surround.DS Speakers are the best value for serious, drop-in upgrades in your doors. The woofers bear a polypropylene cone, UV-treated ribbed surround, enduring voice coil, and an interior-pleasing fresh look. The half-inch tweeters take the performance cues of higher-end coaxials, using a super-strong neodymium magnet and PEI (polyether imide) dome for louder, better-sounding highs.The DS Series comes in eight different sizes, including the new DS650 with 6.5-inch midrange drivers. DS Coaxials fit any speaker cutout, starting from the 3.5-inch DS350 up to a handy 6 x 8 DS680 if your ride requires them. The 6 x 9 offering is actually the thrashin' DS6930 3-way system which mixes in an additional 2-inch mid.DS400 FeaturesCIMP (Curvilinear Injection-Molded Polypropylene Woofer Cones)A high performance composite, which remains rigid, minimizes cone flex and lowers harmonic distortion. The CIMP consists of a one-piece, injection-molded polypropylene material that moves as a piston, exhibiting power and control.Enhanced BAM (Basket and Motor) AssemblyUtilizes a high strength steel basket, features a low-profile open design, and provides a solid foundation for the precision-aligned motor assembly.Optimized Polyfoam Ribbed Surround RadiusThis allows extended cone excursion for additional bass output and higher SPL, and couples the suspension into a conjoined linear-motion body.High-Temp Polyimide Film Voice Coil Formerimproves sonic and conductive properties, and prevents thermal-electrical meltdown.PEN Dome Tweeter with Neodymium MagnetProvides a smooth high frequency response with quick, detailed and spatially-correct imaging. PEN is an acronym for the space age material "biaxially oriented polypropylene naphthalate film"--your parents' tax dollars probably paid for its development, you might as well enjoy it.High-Power Tinsel Lead WiresThese eliminate broken leads and power loss, due to the common use of "insufficient-gauge" lead wires.Ferro-FluidCooled tweeter voice-coil extends the high frequency transducer's life span.What's in the BoxDS400 speaker (pair), Cable, Grille, Installation hardware, User's manual