Quick Overview Dayton Audio Reference Series paper cone drivers combine class-leading low distortion performance with super smooth frequency response due to the use of a proprietary cone blend. Product Highlights Three-part paper composite diaphragm featuring paper, Kevlar®, and glass fibers Similar cosmetics and design features as original Reference Series with low-distortion motor, 6-hole cast frame, rubber surround, and solid aluminum phase plug Perfect for use as a woofer, midwoofer, or dedicated midrange driver Product Manuals / Spec Sheets / Downloads Dayton Audio RS125P-4 Specification Sheet Dayton Audio RS125P-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis Product Description The performance of the original groundbreaking Reference Series from Dayton Audio, now available with a paper cone! The Reference Series Paper drivers use a proprietary paper cone formulation combining natural paper pulp and synthetic Kevlar® and glass fibers to create an advanced non-woven fiber composite that delivers the perfect combination of excellent detail and smooth, natural sonic character, plus a distinctive, classy look. Product Details Speaker Series Reference Series Model Number RS125P-4 List Price $44.99 Color Black Unit of Measure Each UPC 848791001420 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 2.6 Speaker Type Midrange Nominal Diameter 5" Power Handling (RMS) 30 watts Power Handling (max) -- Continuous Program Power -- Impedance 4 ohms Sensitivity 90 dB @ 2.83V/1m Frequency Response 70 - 12 000 Hz Voice Coil Diameter 25 mm Magnet Weight -- DC Resistance (Re) 3.1 ohms Voice Coil Inductance (Le) 0.32 mH @ 1 kHz Resonant Frequency (Fs) 70 Hz Mechanical Q (Qms) 3.19 Electromagnetic Q (Qes) 0.57 Total Q (Qts) 0.48 Diaphragm Mass Inc. Airload (Mms) 5.1g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 1.02 mm/N Surface Area Of Cone (Sd) 54.11 cm² Volume of Displacement (Vd) 21.64 cm³ BL Product (BL) 3.49 Tm Compliance Equivalent Volume (Vas) 3.98 liters Maximum Linear Excursion (Xmax) 4 mm Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Paper / Kevlar 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 125.5 mm Overall Depth 55 mm Baffle Cutout Diameter 94 mm # Mounting Holes 6 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --