Brand NEW! Dayton Audio?s ND64-16 is truly a full-range, low distortion driver and capable of over 6 mm of peak-to-peak excursion. When teamed up with the matching ND series passive radiators this driver can produce incredible full sound from compact enclosures. Key Features Rubber-edged aluminum magnesium alloy cone Dual neodymium motor structure 4-layer voice coil with polyimide former Copper sleeve to minimize distortion High power handling Dayton Audio?s ND64-16 is truly a full-range driver and capable of over 6 mm of peak-to-peak excursion. It features a dual neodymium magnet structure, a 3/4" CCAW voice coil, and a copper sleeve to minimize distortion. An efficient, low-distortion neodymium motor is combined with a rigid yet lightweight aluminum magnesium diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source speaker applications, or combined in multiples for line array designs. Product Details Product Specifications Nominal Diameter 2-1/2" Moving Mass Of Diaphragm (Mmd) 2.11 Power Handling (RMS) 15 Watts Power Handling (MAX) 30 Watts Impedance 16? Frequency Response 100 to 20,000Hz Sensitivity 80.2dB 2.83V/1m Voice Coil Diameter 0.75" Thiele-Small Parameters Resonant Frequency (Fs) 100.9Hz DC Resistance (Re) 14.5? Voice Coil Inductance (Le) 1.21mH Mechanical Q (Qms) 4.1 Electromagnetic Q (Qes) 0.45 Total Q (Qts) 0.41 Compliance Equivalent Volume (Vas) 0.018ft Mechanical Compliance of Suspension (Cms) 1.65mm/N BL Product (BL) 6.54T·m Maximum Linear Excursion (Xmax) 1.9mm Surface Area of Cone (Sd) 15.6cm Materials of Construction Cone Material Aluminum / Magnesium Surround Material Rubber Voice Coil Wire Material CCA Voice Coil Former Kapton / Polyimide Basket / Frame Material Steel Magnet Material Neodymium Mounting Information Overall Outside Diameter 2.52" Baffle Cutout Diameter 2.09" Depth 1.54" # Mounting Holes 4 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume 0.005ft Sealed F3 210.8Hz Vented Volume 0.015ft Vented F3 111.2Hz - All international buyers are responsible for all tax, duties and/or customs fees.