Brand NEW! Including 90 Days USA Factory Warranty. The Dayton Audio RSS265HF-4 10" subwoofer features the high-definition/low-distortion attributes of the acclaimed Reference Series, and provides great results in compact single-driver subwoofer speaker systems...or when used in multiples! Highlights Extensively vented motor eliminates compression and allows quiet excursion Lightweight black anodized aluminum cone for rigidity and lower moving mass Suitable for sealed or vented enclosures Triple shorting ring motor for ultra-low distortion 2-layer coil for reduced back EMF Highest quality materials throughout for long-lasting performance As with the rest of the Reference Series, the main focus of the Dayton Audio RSS265HF 10" subwoofer is ultra-low distortion. Second, third, and intermodulation distortion are kept extremely low by utilizing three short-circuit paths within the motor structure. A durable aramid fiber spider and extensive venting throughout provide quiet and uniform excursion. The black anodized cone, thick rubber surround, and custom basket give this Dayton Audio driver a unique, high-end look. Choose the High Fidelity (HF) version for home systems when you are looking for clean, low bass and are not restricted by speaker cabinet size. Product Specifications Nominal Diameter - 10" Power Handling (RMS) - 350 Watts Power Handling (max) - 700 Watts Impedance - 4 ohms Frequency Response - 22 to 1,000 Hz Sensitivity - 87.8 dB 2.83V/1m Voice Coil Diameter - 2.5" Magnet Weight - 100 oz. Thiele-Small Parameters Resonant Frequency (Fs) - 25.6 Hz DC Resistance (Re) - 3.5 ohms Voice Coil Inductance (Le) - 0.96 mH Mechanical Q (Qms) - 3.06 Electromagnetic Q (Qes) - 0.53 Total Q (Qts) - 0.45 Compliance Equivalent Volume (Vas) - 1.90 ft. Mechanical Compliance of Suspension (Cms) - 0.32 mm/N BL Product (BL) - 11.43 Tm Diaphragm Mass Inc. Airload (Mms) - 120g Maximum Linear Excursion (Xmax) - 12.3 mm Surface Area of Cone (Sd) - 356.3 cm 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 - 10.47" Baffle Cutout Diameter - 9.25" Depth - 5.37" # Mounting Holes - 6 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume - 0.53 ft. Sealed F3 - 51 Hz Vented Volume - 1.68 ft. Vented F3 - 27 Hz - All international buyers are responsible for all tax, duties and/or customs fees.