Additional Details ------------------------------ Product description: Quick Overview The Dayton Audio CE30P-4 features a paper cone, round plastic frame, rubber surround, and powerful neodymium motor structure, for small devices and projects that require big sound from a small driver. 4-ohm impedance. Product Highlights Extremely compact size; round frame Paper cone, rubber surround High-output double neodymium magnet motor Product Manuals / Spec Sheets / Downloads Dayton Audio CE30P-4 Specification SheetBuying Options Buy NowBuy Internationally Product Description Dayton Audio is pleased to introduce the new Commercial Engineering (CE) Series of small loudspeaker drivers. Engineers, designers, and integrators will benefit from how effortlessly these speaker components satisfy the diverse demands associated with consumer electronics and audio-enabled projects. Multiple types and styles are available within the CE Series driver family. Each was produced to provide excellent audio quality no matter what the overall system design goals may be, and to suit a wide spectrum of engineering requirements. These versatile yet economical loudspeakers are available in sizes from 28 mm (1-1/8") to 90 mm (3-1/2") in diameter, and with power ratings from 1.5 watts to 5 watts continuous RMS power. The Dayton Audio CE30P-4 provides big-speaker features in an extremely compact unit. It features a paper cone, rubber roll surround, and high-energy double neodymium motor structure, mounted to a robust injection-molded plastic frame that?s perfect for press-fit or glued mounting. Its design makes it perfect for use in multimedia loudspeakers, small docking speakers for portable music players, or compact television frames and sound bars, plus a variety of other applications. Product Details Speaker Series CE Series Model Number CE30P-8 Color Black Unit of Measure Each UPC 848791000355 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.05 Speaker Type Mini Speaker Power Handling (RMS) 2 watts Power Handling (max) 4 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 78 dB @ 1W/1m Frequency Response 280 - 14,000 Hz Voice Coil Diameter 13 mm Magnet Weight -- DC Resistance (Re) 3.4 ohms Voice Coil Inductance (Le) 0.18 mH Resonant Frequency (Fs) 335.8 Hz Mechanical Q (Qms) 8.62 Electromagnetic Q (Qes) 1.03 Total Q (Qts) 0.8 Diaphragm Mass Inc. Airload (Mms) 0.65 g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.34 mm/N Surface Area Of Cone (Sd) 4.10 cm Volume of Displacement (Vd) .01 cm BL Product (BL) 2.16 Tm Compliance Equivalent Volume (Vas) 0.01 liters Maximum Linear Excursion (Xmax) 1.1 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Paper Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material -- Voice Coil Former -- Basket/Frame Material -- Magnet Material Neodymium Overall Outside Diameter 31.9 mm Overall Depth 15.7 mm Baffle Cutout Diameter 22 mm Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --