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Dayton Audio DC250-8 10″ Classic Woofer Dayton Audio Classic Series woofers are excellent for use as replacement speakers or for new loudspeaker system design and construction. The DC250-8 10″ woofer has developed quite a reputation for having the best bang-for-the-buck performance and value available anywhere. Smooth frequency response and extended bass performance make this driver ideal for use in large format two-way and classic three-way loudspeaker designs. A Qts of 0.45 allows the DC300-8 to work well in both sealed and ported speaker enclosures. A non-pressed treated paper cone allows for smooth frequency response, while the high temperature aluminum voice coil and vented pole piece combine to increase power handling without compression. Longevity is ensured with the use of a rubber surround, treated cloth dust cap, and an extended bump plate. PRODUCT SPECIFICATIONS Power Handling (RMS) 70 Watts Power Handling (max) 140 Watts Impedance 8 ohms Frequency Response 25 to 2,500 Hz Sensitivity 89 dB 1W/1m Voice Coil Diameter 1.38″ Magnet Weight 20 oz. THIELE-SMALL PARAMETERS Resonant Frequency (Fs) 28.9 Hz DC Resistance (Re) 6.7 ohms Voice Coil Inductance (Le) 2.57 mH Mechanical Q (Qms) 4.05 Electromagnetic Q (Qes) 0.50 Total Q (Qts) 0.45 Compliance Equivalent Volume (Vas) 3.93 ft.³ Mechanical Compliance of Suspension (Cms) 0.67 mm/N BL Product (BL) 10.24 Tm Diaphragm Mass Inc. Airload (Mms) 44.88g Maximum Linear Excursion (Xmax) 4.5 mm Surface Area of Cone (Sd) 343.1 cm² MATERIALS OF CONSTRUCTION Cone Material Treated Paper Surround Material Rubber Voice Coil Wire Material Copper Voice Coil Former Aluminum Basket / Frame Material Steel Magnet Material Ferrite MOUNTING INFORMATION Overall Outside Diameter 10.08″ Baffle Cutout Diameter 9.21″ Depth 4.44″ Bolt Circle Diameter 9.67″ # Mounting Holes 4 OPTIMUM CABINET SIZE * Sealed Volume 1.39 ft.³ Sealed F3 55 Hz Vented Volume 4.47 ft.³ Vented F3 29 Hz * Enclosure volume/F3s based on BassBox “optimum” calculations – Dayton Audio DC250-8 10″ Classic Woofer Brand Dayton Audio Model DC250-8 Part Number 295-315 UPC 844632000263 Product Category Woofers Product Rating (77 Reviews) Unit of Measure ea Weight 4.6800