Quick Overview Dayton Audio BCE exciters produce sound through direct vibration of the bones in the head or are capable of converting surfaces into speakers via vibration when placed on materials such as desks, walls, doors, and many other materials. Product Highlights Creates sound using bone conduction Leaves ears free for increased listener safety Can be used as a mini tactile transducer when attached to substrates Wide 300 to 19,000 Hz frequency response 4 ohm impedance with 1W power handling Product Manuals / Spec Sheets / Downloads Dayton Audio BCE-1 Specification Sheet AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis 3 Product Description Unlike conventional transducers that use moving air to produce sound around you, Dayton Audio BCEs (bone conducting exciters) convert the electrical signal into mechanical vibrations so clean, that the brain interprets the vibrating stimulus as excellent sound. Listeners ears are left free to remain aware of their surroundings, increasing personal safety. When used against materials such as cardboard, wood, steel, and plastics, the BCE operates much like a surface exciter, capable of moving mass to produce robust sound output; much like an invisible speaker! BCEs are excellent for unique OEM sound applications and for the experimenter, where conventional speakers and exciters cannot be used due to size constraints. Note: The frequency response is given when used as a bone conducting transducer. This will change when attached to a substrate, and different substrate materials will have different frequency responses. Polarity is indicated by a small half-moon above the positive solder point. Specifications: ? Dimensions (L x W x H): 21.8 mm x 17.8 mm x 7.5 mm To understand more about exciter technology, here is a link to the Exciters Buyers Guide . Product Details Speaker Series Exciters Model Number BCE-1 List Price $11.99 Color Black Unit of Measure Each UPC 848791000508 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.05 Speaker Type Exciter Power Handling (RMS) 1 watt Power Handling (max) -- Continuous Program Power -- Impedance 4 ohms Sensitivity -- Frequency Response -- Voice Coil Diameter -- Magnet Weight -- DC Resistance (Re) 4.0 ohms Voice Coil Inductance (Le) 0.56 mH @10k Hz Resonant Frequency (Fs) 2 100 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 21.8 mm x 17.8 mm Overall Depth 7.5 mm Baffle Cutout Diameter -- Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --