CONE: Made From Polyurethane, The CH4330 4 x 10 Inch Car Speakers Provide a Resilient And Durable Material That Can Offer Great Sound With The Advantage Of Long Lasting Speakers

VOICE COIL: Our Voice Coils Are Able To Withstand High Temperatures Yet Maintain Its Strength And Fatigue Properties Giving Them The Advantage Of Longer Play Times With Lower Weights

SURROUND: We Use Rubber In A Lot Of Our Speakers. It Has The Ability To Endure Much Punishment Without Any Sign Of Damage. It Compliments The Whole Structure Of The Speaker By Allowing Constant Abuse Where It Is Most Needed, Without The Wear And Tear

TWEETER: A Piezoelectric Tweeter Is More Resistant To Overloads And Can Be Used Without A Crossover Due To Its' Electrical Property.

WARRANTY: BOSS Audio Systems Provides a Powerful 3 Year Platinum Online Dealer Warranty So Long As The Purchase Is Made Through Amazon Dot Com