Dayton Audio RS75-8 3" Reference Full-Range Driver 8 OhmCategory: 8 Ohm Hf DriverManufacturer Part Number: RS75-8HighlightsFull-range performance with low distortion and high resolutionDurable construction with aluminum frame, aluminum cone, rubber surroundDistortion-reducing copper ring, copper cap, and aluminum phase plugSubtle yet high-tech look makes a bold cosmetic statementDesigned and engineered in USADayton Audio RS75-8 3" Reference Full-Range Driver 8 OhmThe Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Incorporating a low-distortion motor system with a copper ring, a copper cap, and an aluminum phase plug, the RS75-8 can outperform "boutique" drivers that cost several times the price. Its low-distortion characteristics and smooth response provide exceptional clarity, detail, and dynamics. Features a black anodized cone, heavy-duty 4-hole cast frame, low-loss rubber surround, and gold terminals. Product Specifications Nominal Diameter:3" Power Handling (RMS):15 Watts Power Handling (max):30 Watts Impedance:8 ohms Frequency Response:160 to 20,000 Hz Sensitivity:80.5 dB 2.83V/1m Voice Coil Diameter:0.60" Thiele-Small Parameters Resonant Frequency (Fs):185 Hz DC Resistance (Re):6.2 ohms Voice Coil Inductance (Le):0.32 mH Mechanical Q (Qms):5.12 Electromagnetic Q (Qes):1.35 Total Q (Qts):1.07 Compliance Equivalent Volume (Vas):0.004 ft.³ Mechanical Compliance of Suspension (Cms):0.60 mm/N BL Product (BL):2.55 Tm Diaphragm Mass Inc. Airload (Mms):1.23g Maximum Linear Excursion (Xmax):1.3 mm Surface Area of Cone (Sd):12 cm² Materials of Construction Cone Material:Aluminum Surround Material:Rubber Voice Coil Wire Material:Copper Voice Coil Former:Aluminum Basket / Frame Material:Cast Aluminum Magnet Material:Ferrite Mounting Information Overall Outside Diameter:2.83" Baffle Cutout Diameter:2.13" Depth:1.52" Bolt Circle Diameter:2.52" # Mounting Holes:4 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume:0.017 ft.³ Sealed F3:170 Hz Vented Volume:0.029 ft.³ Vented F3:104 Hz Dayton Audio RS75-8 3" Reference Full-Range Driver 8 Ohm Brand:Dayton Audio Model:RS75-8 Part Number:295-337 UPC:848791005664 Product Category:Midrange / Midbass Drivers & Full-Range Speakers Unit of Measure:EA Weight:0.6 lbs. California Prop 65 :WARNING: Cancer and Reproductive Harmwww.P65Warings.ca.govNOTE: PO BOX deliveries are not available.The item can't be shipped to AF, AA, AC, AE, AM, AP in the Unite States.