VIBE Space Series 90W RMS 2-Way Tweeter/Midrange SPACE3D VIBE Audio's unique 3D system features a separate Midrange and Tweeter, which can be combined to produce a 360 degrees 3 dimensional sound stage. Alloy Gasket and Steel Mesh Grill. The front gasket is made from high quality machined aluminum for a high-end aesthetic The Polyurethane Dual roll surround creates precise dampening of the cone with increased bass delivery at low volumes and tight control of the woofer under high volumes The high fidelity 0.15mm aluminum cone delivers excellent sound dynamics, and is seamlessly joined to the flanged alloy voice coil for perfect unity, resulting in more efficient cooling. A Single Spider provides control and stability for the woofer cone.