Quick Overview The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction. Product Highlights Smooth, low-distortion bass performance Robust construction with high-excursion design Elegant appearance adds class to any project Cosmetic match for Designer Series woofers Product Manuals / Spec Sheets / Downloads AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis 7 Product Description The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction. A built-in mass disc offers a good starting point for most designs, and a convenient M5 threaded hole (screw included) allows different types of weights to be added if desired. Cosmetically and mechanically, the passives match the Shielded DVC line of subwoofers, with a poly coated paper cone and medium-roll rubber surround for clean excursion and long life. The possibilities with these passives are endless, from floor standing two-ways to small active/passive subwoofer systems. Specifications: • Fs: 23.3 Hz • Vas: 43.1 liters • Qms: 7.34 • Cms: 0.68 mm/N • Rms: 1.4 kg/s • Mms: 68.8g • Sd: 211.2 sq. cm. • Xmax: 10 mm • Dimensions: Overall diameter: 216 mm, Cutout diameter: 180 mm, Depth: 58 mm. Note: Adding mass to the passive radiator will decrease Fs and increase Qms. Tip: As a general rule the passive radiator(s) should be able to move double the volume of air as the active woofer(s)/subwoofer(s) in the system. For example: A passive radiator system for a 8" woofer/subwoofer that has 9mm of X-max would require 2-8" passive radiators with 9mm of X-max. For single passive radiator systems, it is common to use a passive that is larger than the active woofer(s)/subwoofer(s). Product Details Speaker Series Designer Series Model Number DS215-PR List Price $22.99 Color Black Unit of Measure Each UPC 844632000393 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 1 Speaker Type Passive Radiator Nominal Diameter 8" Power Handling (max) -- Continuous Program Power -- Sensitivity -- Frequency Response -- Voice Coil Diameter -- Magnet Weight -- DC Resistance (Re) -- Voice Coil Inductance (Le) -- Resonant Frequency (Fs) 23.3 Hz Mechanical Q (Qms) 7.34 Electromagnetic Q (Qes) -- Total Q (Qts) -- Diaphragm Mass Inc. Airload (Mms) 68.8g Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) 0.68 mm/N Surface Area Of Cone (Sd) 211.2 cm² Volume of Displacement (Vd) 232.4 cm³ BL Product (BL) -- Compliance Equivalent Volume (Vas) 43.1 liters Maximum Linear Excursion (Xmax) 11 mm Drivers Mechanical Losses (Rms) 1.4 kg/s Cone / Diaphragm Material Paper Cone Entry / Exit Diameter -- Surround Material Rubber Voice Coil Wire Material -- Voice Coil Former -- Basket/Frame Material Steel Magnet Material -- Overall Outside Diameter 216 mm Overall Depth 58 mm Baffle Cutout Diameter 180 mm # Mounting Holes 5 Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --