One-Piece extended Pole, invented by Stillwater Designs,creates a broad, symmetrical magnetic field for superiorpower handling, precise voice coil control, and minimaldeep bass distortion.Rubberized boot Protectsmassive magnet structurefrom chipping or breaking.Perimeter vents Create a vortexcooling effect around the voice coil.Multi-layer voice coil and Kapton®former Create superior magneticfield and effectively dissipate heat.Durable resin-impregnatedpoly-cotton spider providesprecise coil alignment andcritical cone motion control.Venting In the pole pieceeliminates noise and distortioncaused by huge amounts of airflowcreated by extreme cone excursion.Spring-Loaded nickel plated terminalsFor solid connections with large gaugespeaker wire.One Piece front and rear Gasket Providesgreater durability and resistance to separationwhile providing a superior seal.ISD (Inverted Structural Dome)increases cone's resistance toflex under pressure.Mica-Loaded Polypropylenewith a Titanium Deposit coatingUltra High performance look with superiorinternal damping which means ultra-fasttransient response and super-low distortion.Tough, flexible surround Withlong-throw, positive-roll designcontrols extreme cone excursionsand is highly tear resistant. Ribbedcorners ensure linear cone motion.SSD (Spun Spoke Design)Enhances the cosmeticsand provides a solid anti-resonant foundation forthe motor assembly.Patent PendingPatentedSleeved High-Power Tinsel Lead WiresTo resist lead breakage and power-robbingresistance.ABS(Auxiliary Bracing Structure)Adds rigidity to the outer edge ofthe cone to further reduce cone flexunder extreme excursion.Deep bumped back plate Lets voice coilreach maximum excursion without bottoming-out.New!New!NEW!Rear Cone Brace Redesignedand strengthened to providestructural support for the cone.Kicker Solo-Baric L7-Series SubwoofersRecommended ApplicationsPage 4 L7 Cutaway View