Brand NEW! Including 90 Days USA Factory Warranty. Incorporating a low-distortion motor system with a copper ring, a copper cap, and an aluminum phase plug, the RS75T-8 can outperform "boutique" drivers that cost several times the price. Key Features ? Truncated cast frame?great for line arrays and MTM speaker designs ? Full-range performance ? Low distortion and high resolution ? Aluminum frame, aluminum cone, rubber surround ? Distortion-reducing copper ring, copper cap, and aluminum phase plug ? Subtle yet high-tech look makes a bold cosmetic statement ? Designed and engineered in USA The 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 RS75T-8 can outperform "boutique" drivers that cost several times the price. The driver's truncated frame makes it ideal for line arrays and ultra-compact MTM designs requiring minimal driver-to-driver spacing. 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" Bolt Circle Diameter 2.52 Moving Mass Of Diaphragm (Mmd) 1 Power Handling (RMS) 15 Watts Power Handling (MAX) 30 Watts Impedance 8? Frequency Response 170 to 20,000Hz Sensitivity 84.3dB 2.83V/1m Voice Coil Diameter 0.63" Thiele-Small Parameters Resonant Frequency (Fs) 189Hz DC Resistance (Re) 6.1? Voice Coil Inductance (Le) 0.32mH Mechanical Q (Qms) 5.84 Electromagnetic Q (Qes) 1.13 Total Q (Qts) 0.95 Compliance Equivalent Volume (Vas) 0.01ft Mechanical Compliance of Suspension (Cms) 0.69mm/N BL Product (BL) 2.58T·m Maximum Linear Excursion (Xmax) 1.3mm Surface Area of Cone (Sd) 12cm Materials of Construction Cone Material Aluminum Surround Material Rubber Basket / Frame Material Cast Aluminum Magnet Material Ferrite Mounting Information Overall Outside Diameter 2.83" Baffle Cutout Diameter 2.13" Depth 1.52" # Mounting Holes 4 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume 0.02ft Sealed F3 175.2Hz Vented Volume 0.05ft Vented F3 96Hz - All international buyers are responsible for all tax, duties and/or customs fees.