Additional Details ------------------------------ Product description: Quick Overview The Dayton Audio CE30MB-16B is a compact headphone-style mini speaker with a black Mylar diaphragm and 16 ohm impedance. Product Highlights Lightweight headphone-style mylar diaphragm Rugged plastic frame with raised edge for mounting Powerful neodymium magnet Suitable for headphone applications Product Manuals / Spec Sheets / Downloads Dayton Audio CE30MB-16B 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 CE30MB-16A is a compact, high-efficiency ?headphone-style? mini speaker with a lightweight Mylar diaphragm and extended frequency range. It?s a rugged choice for adding audio to inexpensive headphones, electronic toys, and portable electronics. 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 CE30MB-16B Color Black Unit of Measure Each UPC 848791001116 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.01 Speaker Type Mini Speaker Nominal Diameter 1.25" Power Handling (RMS) 0.50 watts Power Handling (max) 1 watts Continuous Program Power -- Impedance 16 ohms Sensitivity 77 dB @ 1W/1m Frequency Response 400 - 20,000 Hz Voice Coil Diameter 12.5 mm Magnet Weight -- DC Resistance (Re) 15.7 ohms Voice Coil Inductance (Le) 1.35 mH Resonant Frequency (Fs) 401 Hz Mechanical Q (Qms) 2.55 Electromagnetic Q (Qes) 5.28 Total Q (Qts) 1.72 Diaphragm Mass Inc. Airload (Mms) 0.05 g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 3.23 mm/N Surface Area Of Cone (Sd) 3.1 cm Volume of Displacement (Vd) 0.03 cm BL Product (BL) 0.60 Tm Compliance Equivalent Volume (Vas) 0.04 liters Maximum Linear Excursion (Xmax) 0.1 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Poly / Mylar Diaphragm Entry / Exit Diameter -- Surround Material -- Voice Coil Wire Material -- Voice Coil Former Mylar Basket/Frame Material -- Magnet Material Neodymium Overall Outside Diameter 29.7 mm Overall Depth 5.1 mm Baffle Cutout Diameter -- Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --