Quick Overview Incorporating a low-distortion motor system with a copper ring, a copper cap, and an aluminum phase plug, the RS75-4 can outperform "boutique" drivers that cost several times the price. Product Highlights 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 Product Manuals / Spec Sheets / Downloads Dayton Audio RS75-4 Specification Sheet Dayton Audio RS75-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description 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 RS75-4 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. OPTIMUM CABINET SIZE * Sealed Volume 0.02 ft.³ Sealed F3 174 Hz Vented Volume 0.04 ft.³ Vented F3 93 Hz * Enclosure volume/F3s based on BassBox "optimum" calculations Product Details Speaker Series Reference Series Model Number RS75-4 List Price $27.99 Color Black Unit of Measure Each UPC 844632086281 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.6 Speaker Type Full-Range Nominal Diameter 3" Power Handling (RMS) 15 watts Power Handling (max) 30 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 85.2 dB @ 2.83V/1m Frequency Response 170 - 20 000 Hz Voice Coil Diameter 16 mm Magnet Weight -- DC Resistance (Re) 3.1 ohms Voice Coil Inductance (Le) 0.72 mH @ 1 kHz Resonant Frequency (Fs) 177 Hz Mechanical Q (Qms) 5.76 Electromagnetic Q (Qes) 0.97 Total Q (Qts) 0.83 Diaphragm Mass Inc. Airload (Mms) 1.1g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.72 mm/N Surface Area Of Cone (Sd) 12 cm² Volume of Displacement (Vd) 1.31 cm³ BL Product (BL) 2.01 Tm Compliance Equivalent Volume (Vas) 0.14 liters Maximum Linear Excursion (Xmax) 1.1 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Black Anodized Aluminum Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material Copper Voice Coil Former Aluminum Basket/Frame Material Cast Aluminum Magnet Material Ferrite Overall Outside Diameter 72 mm Overall Depth 38.5 mm Baffle Cutout Diameter 54 mm # Mounting Holes 4 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --