Quick Overview The Dayton Audio CE28MB-8 is a compact, high-efficiency, smooth response mini speaker with a durable, lightweight Poly diaphragm and extended frequency range. A rugged choice for adding audio to headphones, electronic toys, and portable devices. Product Highlights Lightweight poly diaphragm for durability and long life Rugged steel frame with front gasket for easy installation Powerful neodymium magnet minimizes size and weight Product Manuals / Spec Sheets / Downloads Dayton Audio CE28MB-8 Specification Sheet AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description The Commercial Engineering (CE) Series drivers from Dayton Audio provides engineers, designers, and integrators with a line of economical small drivers that fit the diverse range of applications found in consumer electronics and audio-enabled electronic projects. The Dayton Audio CE28MB-8 is a compact, high-efficiency, smooth response mini speaker with a durable, lightweight Poly diaphragm and extended frequency range. A rugged choice for adding audio to headphones, electronic toys, and portable devices. Note: The Poly diaphragm is very fragile. To prevent damage, avoid contact with the diaphragm when handling. This driver should be installed behind a grille. Product Details Speaker Series CE Series Model Number CE28MB-8 Color Black Unit of Measure Each UPC 848791008290 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.05 Speaker Type Full-Range Nominal Diameter 1" Power Handling (RMS) 1 watts Power Handling (max) 2 watts Continuous Program Power -- Impedance 8 ohms Sensitivity 81 dB @ 2.83V/1m Frequency Response 620-20,000 Hz Voice Coil Diameter 0.39" Magnet Weight -- DC Resistance (Re) 7.54 ohms Voice Coil Inductance (Le) 0.45 mH (1k) Resonant Frequency (Fs) 623 Hz Mechanical Q (Qms) 2.22 Electromagnetic Q (Qes) 6.16 Total Q (Qts) 1.63 Diaphragm Mass Inc. Airload (Mms) 0.087 g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.748 mm/N Surface Area Of Cone (Sd) 4.52 cm² Volume of Displacement (Vd) -- cm³ BL Product (BL) 0.642 Tm Compliance Equivalent Volume (Vas) 0.008 ft³ Maximum Linear Excursion (Xmax) 0.1 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Poly Cone Entry / Exit Diameter -- Surround Material -- Voice Coil Wire Material -- Voice Coil Former -- Basket/Frame Material Steel Magnet Material Neodymium Overall Outside Diameter 1.10" Overall Depth 0.177" Baffle Cutout Diameter -- # Mounting Holes -- Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --