Overview Check Out Some Of Our Customer's Videos Featuring This Product Dayton Audio DAEX25 Sound Exciters turn virtually any solid object into a speaker by vibrating it at speeds of up to 20,000 cycles per second. The vibrations modulate the air, which is then decoded by the brain as sound. We've tested and placed Sound Exciters on nearly everything you can imagine; under a desk, in an overhead cabinet, behind picture frames, inside cans, behind paper plates, inside binders, cardboard, scraps of wood and even the box they came in! Test the limits of your imagination. Each stick on Sound Exciter is designed for a wide frequency response and great sensitivity. Built-in push terminals enable quick connection to speaker wire (sold separately). Strong 3M adhesive pads affix to nearly any solid surface for secure, long-lasting playback. Sold in pairs. Specifications: ; Power handling: 5 watts RMS/10 watts max ; Impedance: 8 ohms ; VCdia: 1' ; Re: 7.15 ; Le: 77.39 mH ; Dimensions: 3-1/2' dia. x 3/4'. To learn more about Dayton Audio Exciters, and for help on which Exciter is right for you, check out Dayton Audio's Understanding and Using Dayton Audio Exciters White Paper . Check out Project Bike Stereo designed for a BOB trailer featuring the Dayton Audio DAEX25 exciters and a Lepai LP-2020+ amplifier!