We have refined the already spectacular lineup of EL woofers with PP reinforced paper cones, huge voice coils, rubber surrounds, foam edge gaskets, custom baskets, a large magnet with bumped back plates and rear venting. And like all other Bazooka woofers, the EL woofers are designed to utilize the optional Bazooka liquid cooling C.H.I.L system, a quick way to get over 50-Percent more RMS power handling. These woofers have proven to audiophiles around the world that a woofer doesn't have to have a big price tag to deliver big performance