Brand NEW! Including 90 Days USA Factory Warranty. Dayton Audio?s CE30MB-16A is a low power, high-efficiency buzzer-style mini speaker with a lightweight yet rugged Mylar diaphragm. Excellent for applications where high output is required with minimum drive voltage. 16 ohm impedance. Key Features High efficiency buzzer-style design Lightweight mylar diaphragm Rugged steel frame with front gasket Powerful neodymium magnet 16 ohm impedance 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 CE30MB-16A is a compact, high-efficiency "buzzer-style" mini speaker with a lightweight Mylar diaphragm designed for high output. When minimal drive voltage is available, select this driver for rugged, reliable audio. It?s the perfect choice for instrument panels, security control panels, 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 Specifications Nominal Diameter 1" Power Handling (RMS) 0.5 Watts Power Handling (MAX) 1 Watts Impedance 16? Frequency Response 830 to 5,000Hz Sensitivity 77.1dB 2.83V/1m Voice Coil Diameter 0.5" Thiele-Small Parameters Resonant Frequency (Fs) 831Hz DC Resistance (Re) 14.4? Voice Coil Inductance (Le) 1.35mH Mechanical Q (Qms) 2.42 Electromagnetic Q (Qes) 8.71 Total Q (Qts) 1.89 Compliance Equivalent Volume (Vas) 0.0007ft Mechanical Compliance of Suspension (Cms) 0.7mm/N BL Product (BL) 0.68T·m Maximum Linear Excursion (Xmax) 0.1mm Surface Area of Cone (Sd) 4.5cm Materials of Construction Cone Material Poly / Mylar Diaphragm Magnet Material Neodymium Mounting Information Overall Outside Diameter 1.18" Baffle Cutout Diameter 1.07" Depth 0.19" Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume 0.000267ft Sealed F3 1017Hz Vented Volume 0.0144ft Vented F3 536.3Hz - All international buyers are responsible for all tax, duties and/or customs fees.