JBL STAGE3 527 FAM 5.25 in. 2 Way Speakers with No GrillJBL 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