Brand NEW! Including 90 Days USA Factory Warranty. Dayton Audio?s CE40P-8 is an economical small full-range driver that features a high-output neodymium motor, a lightweight paper cone, a front gasket, and a steel frame with two mounting lobes. 8 ohm impedance. Highlights Paper cone with mylar dust cap for extended highs Rugged stamped steel frame High-energy double neodymium magnet motor 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 CE40P-8 provides features you?d expect from a much larger driver, in a size that?s perfect for miniature applications that require wide dispersion and rich, natural sound. Its high-quality design features a paper cone with mylar dust cap, rubber surround, textile spider, high-performance neodymium motor, and a steel frame with dual mounting lobes for conventional mounting. Product Specifications Nominal Diameter - 1-1/2" Power Handling (RMS) - 2 Watts Power Handling (max) - 4 Watts Impedance - 8 ohms Frequency Response - 200 to 20,000 Hz Sensitivity - 83 dB 2.83V/1m Voice Coil Diameter - 0.51" Thiele-Small Parameters Resonant Frequency (Fs) - 227 Hz DC Resistance (Re) - 7.3 ohms Voice Coil Inductance (Le) - 0.25 mH Mechanical Q (Qms) - 4.19 Electromagnetic Q (Qes) - 1.63 Total Q (Qts) - 1.17 Mechanical Compliance of Suspension (Cms) - 0.225 mm/N BL Product (BL) - 1.56 Tm Diaphragm Mass Inc. Airload (Mms) - 0.6g Maximum Linear Excursion (Xmax) - 1.2 mm Surface Area of Cone (Sd) - 6.76 cm Materials of Construction Cone Material - Paper Surround Material - Rubber Magnet Material - Neodymium Mounting Information Overall Outside Diameter - 1.57" Baffle Cutout Diameter - 1.41" Depth - 0.9" # Mounting Holes - 4 - All international buyers are responsible for all tax, duties and/or customs fees.