Brand NEW! Including 90 Days USA Factory Warranty. The aluminum cone on this driver is extremely rigid yet well damped, making the bass and midbass region very clean and low in distortion. Key Features Great looking and sounding woofer One-piece aluminum cone Cosmetic stamped steel frame Flat frequency response in passband region Impressive output capabilities when used in MTM designs Very low distortion The aluminum cone on this driver is extremely rigid yet well damped, making the bass and midbass region very clean and low in distortion. When used with a well-designed crossover, an extremely flat frequency response can be achieved that is clean well into the midrange region. Product Specifications Nominal Diameter 8" Bolt Circle Diameter 8.13 Power Handling (RMS) 60 Watts Power Handling (MAX) 120 Watts Impedance 8? Frequency Response 35 to 8,000Hz Sensitivity 88.7dB 2.83V/1m Voice Coil Diameter 1.42" Thiele-Small Parameters Resonant Frequency (Fs) 34.9Hz DC Resistance (Re) 6.8? Voice Coil Inductance (Le) 1.44mH Mechanical Q (Qms) 1.95 Electromagnetic Q (Qes) 0.45 Total Q (Qts) 0.37 Compliance Equivalent Volume (Vas) 1.51ft Mechanical Compliance of Suspension (Cms) 0.68mm/N BL Product (BL) 10T·m Diaphragm Mass Inc. Airload (Mms) 30.3g Maximum Linear Excursion (Xmax) 5.3mm Surface Area of Cone (Sd) 211.2cm Materials of Construction Cone Material Aluminum Surround Material Rubber Voice Coil Wire Material Copper Voice Coil Former Aluminum Basket / Frame Material Steel Magnet Material Ferrite Mounting Information Overall Outside Diameter 8.5" Baffle Cutout Diameter 7.09" Depth 3.72" # Mounting Holes 5 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume 0.32ft Sealed F3 81Hz Vented Volume 0.89ft Vented F3 46Hz - All international buyers are responsible for all tax, duties and/or customs fees.