Dayton Audio DAEX32UT-4 Ultra Tripod 32 mm 40 W 8 Ohm Overview Turn large, rigid surfaces into speakers with the Dayton Audio DAEX32UT-4. Three screw-down attachment points combine with the pre-attached 3M adhesive for maximum energy transfer, even on moving objects! Highlights - Heavy-duty design with a 32 mm voice coil for a high 40 watt RMS power handling - Three screw-down attachment points for mounting to moving objects - Rare-earth neodymium motor and a proprietary two-layer voice coil - 4-ohm impedance for use with small, Class D amplifiers Dayton Audio DAEX32UT-4 Ultra Tripod 32mm 40W 4 Ohm Dayton Audio's DAEX32UT-4 Ultra Tripod exciter is built to turn large, thick, rigid surfaces into speakers. The 32 mm voice coil makes it perfect for large glass panes, furniture, and surfaces that would normally resist the effects of an exciter. A neodymium magnet is employed to create maximum magnetic flux around the proprietary voice coil for increased sensitivity when compared to similar sized exciters. In turn, this reduces power requirements and makes it possible to use very small Class D audio amplifiers, without sacrificing total output. To ensure maximum acoustic energy transfer between the transducer and the surface to which it is attached, 3M VHB (Very High Bond) adhesive is pre-applied to the main body... just peel and stick! Three screw-down attachment points offer maximum power transfer, even when attached upside-down or on moving objects. Two male spade quick-disconnect terminals are built onto the main body for quick electrical connection.