JBL Premium Sound Quality at an Affordable Price Plus One Woofers Cones provide a larger surface area which results in an increase in overall efficiency by up to 2dB. This provides superior output and performance when used as an upgrade to a factory system Edge-driven Dome Tweeter deliver broader and smoother high frequency response Engineered to Fit Vented basket Frame design help to cool the voice coils making for a reliable speaker Included components: 2 x Speakers, 2 x Grilles, 8 x screws, 8 x speed clips