Selenium by JBL 18WFH1P Speaker (18" Woofer)

The Selenium by JBL 18WFH1P is a high power 18" professional woofer specially designed to reproduce sound at the low frequencies. This woofer is capable of handling up to 800 watts RMS. A bumped and undercut T-yoke assures a minimum of magnetic rectification (off-centering) and a compatible maximum displacement (X-max). Special attention was given to the driver's behaviour under mechanical overload conditions, meaning that all but the most severe abuse will be tolerated- without failure. The 4-layer copper voice coil, using over 80 grams of copper, is wound on a fibreglass-composite former, twice the thickness of typical formers, to drive the moving assembly with great rigidity. The non-pressed long fibre pulp cone has the necessary mass and stiffness to withstand the tremendous accelerating forces required, and is precisely centered by two counter-balancing, distortion cancelling, polyester cotton fibre spiders. This woofer features a triple cooling system consisting of a large diameter center hole surrounded by six smaller holes (directly cooling the gap) and six frame windows (cooling the air trapped between the two spiders).