Additional Details ------------------------------ Product description: Quick Overview Dayton Audio?s CE38M-8 is a lightweight and versatile mylar-diaphragm mini speaker with a rugged plastic frame and neodymium magnet. It?s a great choice for new design or replacement use in headphones, kiosks, electronic games, or portable electronics. Product Highlights Lightweight mylar diaphragm Rugged molded plastic frame Powerful neodymium magnet Light weight, low cost Product Manuals / Spec Sheets / Downloads Dayton Audio CE38M-8 Specification SheetBuying Options Buy NowBuy Internationally Product Description The Commercial Engineering (CE) series of speaker 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 CE38M-8 1-1/2? mini speaker features a feather-light and smooth-sounding Mylar diaphragm and a lightweight injection-molded plastic frame, making it great for portable electronics and headphones. The high sensitivity also enables it to be used as a speaker in kiosks, intercoms, displays, or electronic games, and the 8-ohm impedance works with most small audio amplifiers or line-level outputs. The round frame can be press-fit or glued in place. Note: The Mylar 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 CE38M-8 Unit of Measure Each UPC 848791001093 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.02 Speaker Type Mini Speaker Nominal Diameter 1.50" Power Handling (RMS) 0.25 watts Power Handling (max) 0.50 watts Continuous Program Power -- Impedance 8 ohms Sensitivity 75 dB @ 1W/1m Frequency Response 190 - 20,000 Hz Voice Coil Diameter 12.5 mm Magnet Weight -- DC Resistance (Re) 7.72 ohms Voice Coil Inductance (Le) 0.172 mH Resonant Frequency (Fs) 191.8 Hz Mechanical Q (Qms) 1.59 Electromagnetic Q (Qes) 4.45 Total Q (Qts) 1.17 Diaphragm Mass Inc. Airload (Mms) 0.07g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 9.68 mm/N Surface Area Of Cone (Sd) 4.91 cm Volume of Displacement (Vd) 0.05 cm BL Product (BL) 0.39 Tm Compliance Equivalent Volume (Vas) 0.33 liters Maximum Linear Excursion (Xmax) 0.1 mm Drivers Mechanical Losses (Rms) -- Entry / Exit Diameter -- Surround Material -- Voice Coil Wire Material -- Voice Coil Former Mylar Basket/Frame Material -- Magnet Material Neodymium Overall Outside Diameter 42 mm Overall Depth 7.6 mm Baffle Cutout Diameter -- Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --