Quick Overview The Dayton Audio Classic Series subwoofers offer solid value at lower price points. No compromises were made in the design, materials, or construction of these rugged 4-ohm powerhouses. Product Highlights Sturdy stamped steel frame Vented pole piece and bumped back plate Inductance-reducing copper pole piece cap Treated non-pressed paper/Kevlar cone with rubber surround 4-layer VC with polyimide former Great for home and automotive applications Product Manuals / Spec Sheets / Downloads Dayton Audio DCS165-4 Specification Sheet Dayton Audio DCS165-4 Data Files AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis 10 Product Description The Dayton Audio Classic Series subwoofers offer solid value at lower price points. No compromises were made in the design, materials, or construction of these rugged 4-ohm powerhouses. The drivers feature a vented pole piece with copper cap, bumped back plate for improved excursion capability, Kevlar reinforced paper cone with rubber half-roll surround, and a high-temperature 4-layer copper voice coil wound on a polyimide former. Product Details Speaker Series Classic Series Model Number DCS165-4 List Price $55.99 Color Black Unit of Measure Each UPC 848791001901 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 4.85 Speaker Type Subwoofer Nominal Diameter 6.50" Power Handling (RMS) 100 watts Power Handling (max) 200 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 87.4 dB @ 2.83V/1m Frequency Response 36 - 1 100 Hz Voice Coil Diameter 38.5 mm Magnet Weight -- DC Resistance (Re) 3.4 Ohms Voice Coil Inductance (Le) 1.43 mH @ 1 kHz Resonant Frequency (Fs) 35.7 Hz Mechanical Q (Qms) 6.62 Electromagnetic Q (Qes) 0.36 Total Q (Qts) 0.34 Diaphragm Mass Inc. Airload (Mms) 39.5g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.5 mm/N Surface Area Of Cone (Sd) 124.7 cm² Volume of Displacement (Vd) 74.8 cm³ BL Product (BL) 9.15 Tm Compliance Equivalent Volume (Vas) 12.1 liters Maximum Linear Excursion (Xmax) 6 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 Kapton®/Polyimide Basket/Frame Material Steel Magnet Material Ferrite Overall Outside Diameter 6.57" Overall Depth 3.25" Baffle Cutout Diameter 5.62" # Mounting Holes 8 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --