The Selenium 18SWS1100 high-power 18-inch pro subwoofer offers premium performance, whether for building a custom box or upgrading existing enclosures. Max power handling is up to 2,200 Watts. A 4-inch (100mm) voice coil wound in a fiberglass former with flat aluminum wire drives the moving assembly. A non-pressed long fiber pulp cone has the necessary stiffness to withstand the tremendous accelerating forces involved and is properly centered by two counteracting polycotton fiber spiders.
The 18SWS1100 employs a triple cooling system — a large diameter center hole surrounded by six smaller holes directly cools the gap and six frame windows cool air trapped between the two spiders— both contributing to efficient heat transfer. Additionally, a bumped bottom plate and an extended pole piece keeps the magnetic field linearity in order to avoid distortion and also improves heat transfer. Meanwhile, its highly reinforced aluminum-injected frame absorbs mechanical shocks, while acting as a heat sink without interfering with the magnetic field.
For more information, including complete specs and Thiele-Small parameters, go to www.jblpro.com/www/products/selenium.
