Quick Overview This tiny exciter packs one heck of a punch. Dayton Audios DAEX19SL-4 4 ohm sound exciter can turn most light rigid surfaces into a speaker with a surprising amount of output. Perfect for adding audio to small toys, signs, and many other projects. Product Highlights Only 1.3" diameter by 0.26" high, can be installed almost anywhere Dual suspension for linear operation and lower distortion 4 ohms impedance for use with small, Class D amplifiers Pre-applied 3M™ VHB™ adhesive for quick, durable installation Product Manuals / Spec Sheets / Downloads Dayton Audio DAEX19SL-4 Specification Sheet AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description Dayton Audios 19 mm DAEX19SL-4 coin type exciter features the same ability to turn nearly any surface into a speaker, as other exciters and tactile transducers, only in an extremely compact package for working with smaller surfaces in the minimum amount of space. This exciters small size and weight enables audio reproduction in places never imagined: toys, signs, cabinet doors, etc... even windows! 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 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... just peel and stick! Two PCB solder points keep installation and wiring as compact as possible. Note: An exciters frequency response and sensitivity are completely dependent on the exciters designated surface. Thinner, smaller materials will tend to be louder and create a mid/tweeter response. Thicker, larger materials (with multiple exciters) will be slightly quieter but result in a more full-range sound. Specifications: ? Power handling: 4 watts RMS ? VCdia: 19 mm ? Nominal impedance: 4 ohms ? Re: 2.94 ohms ? Le: 0.01 mH ? Fs (uncoupled): 630 Hz ? Dimensions: 1.3" (33 mm) dia. x 0.26" (6.6 mm) H ? Adhesive dimensions: 0.9" (23 mm) outside diameter, 0.63" (16 mm) inside diameter ? Weight: 13.5 grams. To understand more about exciter technology, here is a link to the Exciters Buyers Guide . Product Details Model Number DAEX19SL-4 List Price $7.99 Color Black Unit of Measure Each UPC 848791002007 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.05 Speaker Type Exciter Power Handling (RMS) 4 watts Power Handling (max) -- Continuous Program Power -- Impedance 4 ohms Sensitivity -- Frequency Response -- Voice Coil Diameter 19 mm Magnet Weight -- DC Resistance (Re) 2.94 ohms Voice Coil Inductance (Le) 0.01 mH Resonant Frequency (Fs) 630 Hz Mechanical Q (Qms) -- Electromagnetic Q (Qes) -- Total Q (Qts) -- Diaphragm Mass Inc. Airload (Mms) -- Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) -- Surface Area Of Cone (Sd) -- Volume of Displacement (Vd) -- BL Product (BL) -- Compliance Equivalent Volume (Vas) -- Maximum Linear Excursion (Xmax) -- Drivers Mechanical Losses (Rms) -- Entry / Exit Diameter -- Surround Material -- Voice Coil Wire Material -- Voice Coil Former -- Basket/Frame Material -- Magnet Material -- Overall Outside Diameter -- Overall Depth -- Baffle Cutout Diameter -- Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --